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Dos Santos L, Cristino de Oliveira A, Marcondes Silva Lotz R, Manera F, Fernandes RC, Moreira Castilho B, Höfelmann DA. Trajectory Patterns of Weight and Length in Children: From Birth Until 2-Years of Age. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024:1-11. [PMID: 38990649 DOI: 10.1080/27697061.2024.2374412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 06/26/2024] [Indexed: 07/13/2024]
Abstract
OBJECTIVE The aim was to identify trajectory patterns of weight and length in children from birth until two years of life and establish associations with maternal and child characteristics. METHODS A mixed-cohort study was conducted in public health services in Colombo-PR, Brazil, between 2018 and 2022. Pregnancy information was gathered through anthropometric data collection and questionnaires. Birth data were extracted from birth record forms, while weight and length data in the first two years of life were obtained from physical and electronic health service records. Weight and length trajectory patterns were identified using a group-based trajectory model. The definition of the number of trajectory patterns to be selected considered the model fit to the type of variable, its practical utility, as well as the probabilities of group membership. RESULTS Two trajectory patterns of weight and length were identified among the children. The majority exhibited a pattern of weight (67.8%, n = 382) and length (90.9%, n = 472) considered high and stable, with a tendency to decelerate from one and a half years of age. The probability of belonging to the lower weight gain group was associated with female sex (41.5%, p < 0.001), smoking during pregnancy (48.7%, p = 0.008), prematurity (65.0%, p = 0.001), cesarean delivery (36.4%, p = 0.009), small for gestational age (69.0%, p < 0.001), and twinning (69.2%, p = 0.002). Similarly, the probability of belonging to the lower length gain group was associated with female sex (11.7%, p < 0.001), smoking during pregnancy (20.6%, p = 0.003), cesarean delivery (10.1%, p = 0.048), born small for gestational age (46.4%, p < 0.001), and twinning (46.1%, p < 0.001). CONCLUSION Conditions during pregnancy and childbirth can impact growth patterns in the first two years of life.
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Affiliation(s)
- Lais Dos Santos
- Post-Graduate Program of Public Health, Department of Public Health, Federal University of Paraná, Curitiba, Brazil
| | - Andressa Cristino de Oliveira
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
| | - Rafaela Marcondes Silva Lotz
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
| | - Fernanda Manera
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
| | - Renata Cordeiro Fernandes
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
| | - Barbara Moreira Castilho
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
| | - Doroteia Aparecida Höfelmann
- Post-Graduate Program of Public Health, Department of Public Health, Federal University of Paraná, Curitiba, Brazil
- Post-Graduate Program of Food and Nutrition, Department of Nutrition, Federal University of Paraná, Curitiba, Brazil
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Cadman T, Elhakeem A, Vinther JL, Avraam D, Carrasco P, Calas L, Cardol M, Charles MA, Corpeleijn E, Crozier S, de Castro M, Estarlich M, Fernandes A, Fossatti S, Gruszfeld D, Guerlich K, Grote V, Haakma S, Harris JR, Heude B, Huang RC, Ibarluzea J, Inskip H, Jaddoe V, Koletzko B, Lioret S, Luque V, Manios Y, Moirano G, Moschonis G, Nader J, Nieuwenhuijsen M, Andersen AMN, McEachen R, de Moira AP, Popovic M, Roumeliotaki T, Salika T, Santa Marina L, Santos S, Serbert S, Tzorovili E, Vafeiadi M, Verduci E, Vrijheid M, Vrijkotte TGM, Welten M, Wright J, Yang TC, Zugna D, Lawlor D. Associations of Maternal Educational Level, Proximity to Green Space During Pregnancy, and Gestational Diabetes With Body Mass Index From Infancy to Early Adulthood: A Proof-of-Concept Federated Analysis in 18 Birth Cohorts. Am J Epidemiol 2024; 193:753-763. [PMID: 37856700 DOI: 10.1093/aje/kwad206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/06/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023] Open
Abstract
International sharing of cohort data for research is important and challenging. We explored the feasibility of multicohort federated analyses by examining associations between 3 pregnancy exposures (maternal education, exposure to green vegetation, and gestational diabetes) and offspring body mass index (BMI) from infancy to age 17 years. We used data from 18 cohorts (n = 206,180 mother-child pairs) from the EU Child Cohort Network and derived BMI at ages 0-1, 2-3, 4-7, 8-13, and 14-17 years. Associations were estimated using linear regression via 1-stage individual participant data meta-analysis using DataSHIELD. Associations between lower maternal education and higher child BMI emerged from age 4 and increased with age (difference in BMI z score comparing low with high education, at age 2-3 years = 0.03 (95% confidence interval (CI): 0.00, 0.05), at 4-7 years = 0.16 (95% CI: 0.14, 0.17), and at 8-13 years = 0.24 (95% CI: 0.22, 0.26)). Gestational diabetes was positively associated with BMI from age 8 years (BMI z score difference = 0.18, 95% CI: 0.12, 0.25) but not at younger ages; however, associations attenuated towards the null when restricted to cohorts that measured gestational diabetes via universal screening. Exposure to green vegetation was weakly associated with higher BMI up to age 1 year but not at older ages. Opportunities of cross-cohort federated analyses are discussed.
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Booth C, Fitzsimons E. The onset of mental health disparities in sexual minority and majority youth: evidence from the UK Millennium Cohort Study. Dev Psychopathol 2024:1-11. [PMID: 38374604 DOI: 10.1017/s0954579424000105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Decades of research shows that sexual minority youth (SMY) display heightened risk for mental health problems, although the onset of such disparities remains unclear. The Millennium Cohort Study is the largest nationally representative longitudinal study of adolescents in the United Kingdom. In this study, participants (N = 10,047, 50% female) self-reported their sexual identity at age 17 and had parent-reported mental health data, from the Strengths and Difficulties Questionnaire, reported across five waves at ages 5, 7, 11, 14, and 17. Multilevel linear spline models, stratified by sex, were used to examine mental health trajectories between sexual identity groups (completely heterosexual, mostly heterosexual, SMY). SMY showed heightened peer problems from the baseline assessment at age five, increasing over time, and heightened emotional problems from age 11, increasing over time. Mostly heterosexual youth showed heightened emotional problems at age 11 in males, and at age 17 in females. Findings are discussed in light of the literature on minority stress and gender conformity in youth. The use of parent-reported mental health data means that estimates are likely to be conservative. We conclude that interventions supporting SMY should start early and be available throughout adolescence.
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Affiliation(s)
- Charlotte Booth
- Centre for Longitudinal Studies, University College London, London, UK
| | - Emla Fitzsimons
- Centre for Longitudinal Studies, University College London, London, UK
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4
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Goddard FGB, Hunegnaw BM, Luu J, Haneuse SJPA, Zeleke M, Mohammed Y, Bekele C, Tadesse D, Solomon M, Bekele D, Chan GJ. Prevalence, Incidence, and Reversal Pattern of Childhood Stunting From Birth to Age 2 Years in Ethiopia. JAMA Netw Open 2024; 7:e2352856. [PMID: 38265800 PMCID: PMC10809014 DOI: 10.1001/jamanetworkopen.2023.52856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/03/2023] [Indexed: 01/25/2024] Open
Abstract
Importance Although there has been a reduction in stunting (low-height-for-age and low-length-for-age), a proxy of malnutrition, the prevalence of malnutrition in Ethiopia is still high. Child growth patterns and estimates of stunting are needed to increase awareness and resources to improve the potential for recovery. Objective To estimate the prevalence, incidence, and reversal of stunting among children aged 0 to 24 months. Design, Setting, and Participants This population-based cohort study of the Birhan Maternal and Child Health cohort in North Shewa Zone, Amhara, Ethiopia, was conducted between December 2018 and November 2020. Eligible participants included children aged 0 to 24 months who were enrolled during the study period and had their length measured at least once. Data analysis occurred from Month Year to Month Year. Main Outcomes and Measures The primary outcome of this study was stunting, defined as length-for-age z score (LAZ) at least 2 SDs below the mean. Z scores were also used to determine the prevalence, incidence, and reversal of stunting at each key time point. Growth velocity was determined in centimeters per month between key time points and compared with global World Health Organization (WHO) standards for the same time periods. Heterogeneity was addressed by excluding outliers in sensitivity analyses using modeled growth trajectories for each child. Results A total of 4354 children were enrolled, out of which 3674 (84.4%; 1786 [48.7%] female) had their length measured at least once and were included in this study. The median population-level length was consistently below WHO growth standards from birth to 2 years of age. The observed prevalence of stunting was highest by 2 years of age at 57.4% (95% CI, 54.8%-9 60.0%). Incidence of stunting increased over time and reached 51.0% (95% CI, 45.3%-56.6%) between ages 12 and 24 months. Reversal was 63.5% (95% CI, 54.8%-71.4%) by age 6 months and 45.2% (95% CI, 36.0%-54.8%) by age 2 years. Growth velocity point estimate differences were slowest compared with WHO standards during the neonatal period (-1.4 cm/month for girls and -1.6 cm/month for boys). There was substantial heterogeneity in anthropometric measurements. Conclusions and Relevance The evidence from this cohort study highlights a chronically malnourished population with much of the burden associated with growth faltering during the neonatal periods as well as after 6 months of age. To end all forms of malnutrition, growth faltering in populations such as that in young children in Amhara, Ethiopia, needs to be addressed.
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Affiliation(s)
- Frederick G. B. Goddard
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Bezawit Mesfin Hunegnaw
- Department of Pediatrics and Child Health, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Jonathan Luu
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | | | - Mesfin Zeleke
- HaSET, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Yahya Mohammed
- HaSET, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Chalachew Bekele
- HaSET, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Daniel Tadesse
- HaSET, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Meles Solomon
- Maternal, Child and Adolescent health lead executive office, Federal Ministry of Health, Ethiopia
| | - Delayehu Bekele
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Obstetrics and Gynecology, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Grace J. Chan
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Pediatrics and Child Health, St Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
- Department of Pediatrics, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
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Zinab B, Ali R, Megersa BS, Belachew T, Kedir E, Girma T, Abdisa A, Berhane M, Admasu B, Friis H, Abera M, Olsen MF, Andersen GS, Wells JCK, Filteau S, Wibaek R, Nitsch D, Yilma D. Association of linear growth velocities between 0 and 6 years with kidney function and size at 10 years: A birth cohort study in Ethiopia. Am J Clin Nutr 2023; 118:1145-1152. [PMID: 37758061 DOI: 10.1016/j.ajcnut.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023] Open
Abstract
BACKGROUND Risk of noncommunicable diseases accrues from fetal life, with early childhood growth having an important role in adult disease risk. There is a need to understand how early-life growth relates to kidney function and size. OBJECTIVES This study aimed to assess the association of linear growth velocities among children between 0 and 6 y with kidney function and size among children aged 10 y. METHODS The Ethiopian Anthropometric and Body Composition birth cohort recruited infants born at term to mothers living in Jimma with a birth weight of ≥1500 g and without congenital malformations. Participants were followed up with 13 measurements between birth and 6 y of age. The latest follow-up was at ages 7-12 y with measurement of serum cystatin C as a marker of kidney function and ultrasound assessment of kidney dimensions. Kidney volume was computed using an ellipsoid formula. Linear-spline multilevel modeling was used to compute linear growth velocities between 0 and 6 y. Multiple linear regression modeling was used to examine the associations of linear growth velocities in selected age periods with cystatin C and kidney size. RESULTS Data were captured from 355 children, at a mean age of 10 (range 7-12) y. The linear growth velocity was high between 0 and 3 mo and then decreased with age. There was no evidence of an association of growth velocity ≤24 mo with cystatin C at 10 y. Between 24 and 48 and 48 and 76 mo, serum cystatin C was higher by 2.3% [95% confidence interval (CI): 0.6, 4.2] and 2.1% (95% CI: 0.3, 4.0) for 1 SD higher linear growth velocity, respectively. We found a positive association between linear growth velocities at all intervals between 0 and 6 y and kidney volume. CONCLUSIONS Greater linear growth between 0 and 6 y of development was positively associated with kidney size, and greater growth velocity after 2 y was associated with higher serum cystatin C concentrations.
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Affiliation(s)
- Beakal Zinab
- Department of Nutrition and Dietetics, Faculty of Public Health, Jimma University, Jimma, Ethiopia; Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark.
| | - Rahma Ali
- Department of Population and Family Health, Faculty of Public Health, Jimma University, Jimma, Ethiopia; Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Bikila S Megersa
- Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Tefera Belachew
- Department of Nutrition and Dietetics, Faculty of Public Health, Jimma University, Jimma, Ethiopia
| | - Elias Kedir
- Department of Radiology, Jimma University, Jimma, Ethiopia
| | - Tsinuel Girma
- Department of Pediatrics and Child Health Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
| | | | - Melkamu Berhane
- Department of Pediatrics and Child Health Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
| | - Bitiya Admasu
- Department of Population and Family Health, Faculty of Public Health, Jimma University, Jimma, Ethiopia
| | - Henrik Friis
- Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Mubarek Abera
- Department of Psychiatry, Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
| | - Mette F Olsen
- Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark; Department of Infectious Diseases, Rigshospitalet, Copenhagen, Denmark
| | | | - Jonathan C K Wells
- Childhood Nutrition Research Center, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Suzanne Filteau
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Dorothea Nitsch
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Daniel Yilma
- Department of Internal Medicine, Faculty of Medical Sciences, Jimma University, Jimma, Ethiopia
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Yelverton CA, O'Keeffe LM, Bartels HC, McDonnell C, Geraghty AA, O'Brien EC, Killeen SL, Twomey P, Kilbane M, Crowley RK, McKenna M, McAuliffe FM. Association between maternal blood lipids during pregnancy and offspring growth trajectories in a predominantly macrosomic cohort: findings from the ROLO longitudinal birth cohort study. Eur J Pediatr 2023; 182:5625-5635. [PMID: 37819419 DOI: 10.1007/s00431-023-05251-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/26/2023] [Accepted: 10/01/2023] [Indexed: 10/13/2023]
Abstract
The purpose of this study is to examine associations between maternal lipid profiles in pregnancy and offspring growth trajectories in a largely macrosomic cohort. This is a secondary analysis of the ROLO birth cohort (n = 293), which took place in the National Maternity Hospital, Dublin, Ireland. Infants were mostly macrosomic, with 55% having a birthweight > 4 kg. Maternal mean age was 32.4 years (SD 3.9 years), mean BMI was 26.1 kg/m2 (SD 4.4 kg/m2) and 48% of children born were males. Total cholesterol, high density lipoprotein cholesterol (HDL-cholesterol), low density lipoprotein cholesterol (LDL-cholesterol) and triglycerides were measured from fasting blood samples of mothers at 14 and 28 week gestation. The change in maternal lipid levels from early to late pregnancy was also examined. Offspring abdominal circumference and weight were measured at 20- and 34-week gestation, birth, 6 months, 2 years and 5 years postnatal. Linear spline multilevel models examined associations between maternal blood lipid profiles and offspring growth. We found some weak, significant associations between maternal blood lipids and trajectories of offspring growth. Significant findings were close to the null, providing limited evidence. For instance, 1 mmol/L increase in maternal triglycerides was associated with faster infant weight growth from 20- to 34-week gestation (0.01 kg/week, 95% CI - 0.02, - 0.001) and slower abdominal circumference from 2 to 5 years (0.01 cm/week, 95% CI - 0.02, - 0.001). These findings do not provide evidence of a clinically meaningful effect. Conclusion: These findings raise questions about the efficacy of interventions targeting maternal blood lipid profiles in pregnancies at risk of macrosomia. New studies on this topic are needed. What is Known: • Maternal fat accumulation during early pregnancy may potentially support fetal growth in the third trimester by providing a reserve of lipids that are broken down and transferred to the infant across the placental barrier. • There are limited studies exploring the impact of maternal lipid profiles on infant and child health using growth trajectories spanning prenatal to postnatal life. What is New: • Maternal blood lipid profiles were not associated with offspring growth trajectories of weight and abdominal circumference during pregnancy up to 5 years of age in a largely macrosomic cohort, as significant findings were close to the null, providing limited evidence for a clinically meaningful relationship. • Strengths of this work include the use of infant growth trajectories that span prenatal to postnatal life and inclusion of analyses of the change of maternal lipid levels from early to late pregnancy and their associations with offspring growth trajectories from 20-week gestation to 5 years of age.
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Affiliation(s)
- C A Yelverton
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - L M O'Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - H C Bartels
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - C McDonnell
- Department of Paediatric Endocrinology & Diabetes, Children's Health Ireland, Temple Street Hospital, Dublin, Ireland
| | - A A Geraghty
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - E C O'Brien
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
- School of Biological, Health and Sports Sciences, Technological University Dublin, Dublin, Ireland
| | - S L Killeen
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - P Twomey
- Department of Clinical Chemistry, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - M Kilbane
- Department of Clinical Chemistry, St Vincent's University Hospital, Dublin, Ireland
| | - R K Crowley
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- Department of Endocrinology & Diabetes Mellitus, St Vincent's University Hospital, Dublin, Ireland
| | - M McKenna
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- Department of Endocrinology & Diabetes Mellitus, St Vincent's University Hospital, Dublin, Ireland
| | - F M McAuliffe
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland.
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O'Neill KN, Bell JA, Smith GD, Fraser A, Howe LD, Kearney PM, Robinson O, Tilling K, Willeit P, O'Keeffe LM. Childhood socioeconomic position and sex-specific trajectories of metabolic traits across early life: prospective cohort study. EBioMedicine 2023; 98:104884. [PMID: 37989036 PMCID: PMC10700592 DOI: 10.1016/j.ebiom.2023.104884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/27/2023] [Accepted: 11/07/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Socioeconomic inequalities in cardiovascular disease risk begin early in life and are more pronounced in females than males later in life. Causal atherogenic traits explaining this are not well understood. We explored sex-specific associations between childhood socioeconomic position (SEP) and molecular measures of systemic metabolism across early life. METHODS Data were from the Avon Longitudinal Study of Parents and Children (ALSPAC), a population-based birth cohort in southwest England. Pregnant women with an expected delivery date between 1991 and 1992 were invited to participate. Maternal education was the primary indicator of SEP. Concentrations of 148 metabolic traits from targeted metabolomics (nuclear magnetic resonance spectroscopy) from research clinics at ages 7, 15, 18 and 25 years were analysed. The sex-specific slope index of inequality (SII) in trajectories of metabolic traits was estimated using multilevel models. FINDINGS Total number of participants included was 6537 (12,543 repeated measures). Lower maternal education was associated with more adverse levels of several atherogenic lipids and key metabolic traits among females at age 7 years, but not males. For instance, SII for very small very-low-density lipoprotein (VLDL) concentrations was 0.16SD (95% CI: 0.01, 0.30) among females and -0.02SD (95% CI: -0.16, 0.13) among males. Between 7 and 25 years, inequalities widened among females and emerged among males particularly for VLDL particle concentrations, apolipoprotein-B concentrations, and inflammatory glycoprotein acetyls. For instance, at 25 years, SII for very small VLDL concentrations was 0.36SD (95% CI: 0.20, 0.52) and 0.22SD (95% CI: 0.04, 0.40) among females and males respectively. INTERPRETATION Prevention of socioeconomic inequalities in cardiovascular disease risk requires a life course approach beginning at the earliest opportunity, especially among females. FUNDING The UK Medical Research Council and Wellcome (grant ref: 217065/Z/19/Z) and the University of Bristol provide core support for ALSPAC. A comprehensive list of grants funding is available on the ALSPAC website (http://www.bristol.ac.uk/alspac/external/documents/grant-acknowledgements.pdf). KON is supported by a Health Research Board (HRB) of Ireland Investigator Led Award (ILP-PHR-2022-008). JB, GDS and KT work in a unit funded by the UK MRC (MC_UU_00011/1 and MC UU 00011/3) and the University of Bristol. OR is supported by a UKRI Future Leaders Fellowship (MR/S03532X/1). These funding sources had no role in the design and conduct of this study. This publication is the work of the authors and KON will serve as guarantor for the contents of this paper.
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Affiliation(s)
- Kate N O'Neill
- School of Public Health, Western Gateway Building, University College Cork, Cork, Ireland.
| | - Joshua A Bell
- MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
| | - George Davey Smith
- MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
| | - Abigail Fraser
- MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
| | - Laura D Howe
- MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
| | - Patricia M Kearney
- School of Public Health, Western Gateway Building, University College Cork, Cork, Ireland
| | - Oliver Robinson
- MRC Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, UK
| | - Kate Tilling
- MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
| | - Peter Willeit
- Clinical Epidemiology Team, Medical University of Innsbruck, Austria; Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, UK
| | - Linda M O'Keeffe
- School of Public Health, Western Gateway Building, University College Cork, Cork, Ireland; MRC Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK; Population Health Sciences, Bristol Medical School, Oakfield House, Oakfield Grove, Bristol, BS82BN, UK
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8
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Martine‐Edith G, Johnson W, Petherick ES. Associations between maternal gestational diabetes metformin or insulin treatment and offspring growth trajectories from birth to 60 months of age: Findings from the Born in Bradford (BiB) study. Diabet Med 2023; 40:e15204. [PMID: 37597238 PMCID: PMC10946820 DOI: 10.1111/dme.15204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/19/2023] [Accepted: 08/12/2023] [Indexed: 08/21/2023]
Abstract
AIM To investigate the associations between gestational diabetes mellitus (GDM) metformin or insulin treatment and offspring growth trajectories from 0 to 60 months. METHODS Participants were from the Born in Bradford birth cohort study. Using covariate-adjusted multilevel linear spline models (4 splines: 0-1.6, 1.6-6, 6-17 and 17-60 months), we compared weight, height and body mass index (BMI) z-score trajectories of: (1) 76 offspring exposed to metformin (OGDM-Metformin) and 420 offspring exposed to insulin (OGDM-Insulin); (2) OGDM-Metformin and 9171 offspring not exposed to GDM (No-GDM); (3) OGDM-Insulin and No-GDM. RESULTS (1) OGDM-Metformin had comparable growth trajectories to OGDM-Insulin from 0 to 60 months. (2) OGDM-Metformin had a lower mean birthweight z-score than No-GDM. OGDM-Metformin had faster changes in height z-score (0.13 [95% CI 0.026, 0.24]) from 17 to 60 months and by 60 months, had comparable mean BMI z-score to No-GDM. (3) OGDM-insulin had lower mean birthweight and height z-scores than No-GDM. OGDM-Insulin had faster changes in weight (0.32 [0.021, 0.62]) and height (0.50 [0.087, 0.91]) from 1.6 to 6 months and by 60 months, had comparable mean BMI z-score to No-GDM. CONCLUSIONS GDM metformin treatment was not associated with differences in offspring growth trajectories compared to insulin treatment. Both metformin and insulin-exposed offspring had comparable BMI z-score to No-GDM by 60 months.
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Affiliation(s)
| | - William Johnson
- School of Sport, Exercise and Health SciencesLoughborough UniversityLoughboroughUK
| | - Emily S. Petherick
- School of Sport, Exercise and Health SciencesLoughborough UniversityLoughboroughUK
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Prince C, Joinson C, Kwong ASF, Fraser A, Heron J. The relationship between timing of onset of menarche and depressive symptoms from adolescence to adulthood. Epidemiol Psychiatr Sci 2023; 32:e60. [PMID: 37766510 PMCID: PMC10539742 DOI: 10.1017/s2045796023000707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/30/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
AIMS Girls who experience an earlier onset of menarche than their peers are at increased risk of depressive symptoms in mid-adolescence, but it is unclear if this association persists into adulthood. This study examines whether longitudinal patterns of depressive symptoms from adolescence to adulthood vary according to timing of menarche. METHODS About 4,864 female participants in the UK Avon Longitudinal Study of Parents and Children provided data on age at onset of menarche (assessed in repeated questionnaires from 8 to 17 years) and depressive symptoms across nine time points (13 to 26 years) using the Short Mood and Feelings Questionnaire. We compared patterns of depressive symptoms in girls with 'early' (<11.5 years), 'normative' (11.5 to 13.5 years) and 'late' (≥13.5 years) menarche using a linear spline multilevel growth curve model adjusted for indicators of socioeconomic position, father absence and body mass index. RESULTS Early, compared with normative, menarche was associated with higher levels of depressive symptoms at age 14 (imputed adjusted estimated difference = 0.94, 95% confidence interval [CI] = 0.44, 1.45), but the association attenuated at 24 years (0.24 [-0.72, 1.19]). Late menarche, compared with normative, was associated with a lower level of depressive symptoms at age 14 (-0.69 [-1.10, -0.29]), but this association also attenuated at 24 years (-0.15 [-0.92, 0.62]). CONCLUSIONS This study did not find a persistent effect of early menarche, compared to normative, on depressive symptoms. However, our findings are consistent with the level of depressive symptoms increasing at the onset of menarche irrespective of timing. The late onset girls 'catch up' with their peers who experience menarche earlier in terms of depressive symptoms. Future studies should continue to assess the impact of timing of menarche further into adulthood.
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Affiliation(s)
- C. Prince
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - C. Joinson
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
| | - A. S. F. Kwong
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Division of Psychiatry, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - A. Fraser
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - J. Heron
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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10
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Yoshida-Montezuma Y, Kirkwood D, Sivapathasundaram B, Keown-Stoneman CDG, de Souza RJ, To T, Borkhoff CM, Birken CS, Maguire JL, Brown HK, Anderson LN. Late preterm birth and growth trajectories during childhood: a linked retrospective cohort study. BMC Pediatr 2023; 23:450. [PMID: 37684561 PMCID: PMC10485950 DOI: 10.1186/s12887-023-04257-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND Evidence suggests that accelerated postnatal growth in children is detrimental for adult cardiovascular health. It is unclear whether children born late preterm (34-36 weeks) compared to full term (≥ 39 weeks), have different growth trajectories. Our objective was to evaluate the association between gestational age groups and growth trajectories of children born between 2006-2014 and followed to 2021 in Ontario, Canada. METHODS We conducted a retrospective cohort study of children from singleton births in TARGet Kids! primary care network with repeated measures of weight and height/length from birth to 14 years, who were linked to health administrative databases. Piecewise linear mixed models were used to model weight (kg/month) and height (cm/month) trajectories with knots at 3, 12, and 84 months. Analyses were conducted based on chronological age. RESULTS There were 4423 children included with a mean of 11 weight and height measures per child. The mean age at the last visit was 5.9 years (Standard Deviation: 3.1). Generally, the more preterm, the lower the mean value of weight and height until early adolescence. Differences in mean weight and height for very/moderate preterm and late preterm compared to full term were evident until 12 months of age. Weight trajectories were similar between children born late preterm and full term with small differences from 84-168 months (mean difference (MD) -0.04 kg/month, 95% CI -0.06, -0.03). Children born late preterm had faster height gain from 0-3 months (MD 0.70 cm/month, 95% CI 0.42, 0.97) and 3-12 months (MD 0.17 cm/month, 95% CI 0.11, 0.22). CONCLUSIONS Compared to full term, children born late preterm had lower average weight and height from birth to 14 years, had a slightly slower rate of weight gain after 84 months and a faster rate of height gain from 0-12 months. Follow-up is needed to determine if growth differences are associated with long-term disease risk.
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Affiliation(s)
- Yulika Yoshida-Montezuma
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street W, Hamilton, ON, L8S 4L8, Canada
| | | | | | - Charles D G Keown-Stoneman
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Li Ka Shing Knowledge Institute, Unity Health Toronto, Toronto, ON, Canada
| | - Russell J de Souza
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street W, Hamilton, ON, L8S 4L8, Canada
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Population Health Research Institute, Hamilton Health Sciences Corporation, Hamilton, ON, Canada
| | - Teresa To
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- ICES, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
| | - Cornelia M Borkhoff
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
- Women's College Research Institute, Toronto, ON, Canada
- Division of Pediatric Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Catherine S Birken
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
- Division of Pediatric Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Pediatrics, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
| | - Jonathon L Maguire
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Li Ka Shing Knowledge Institute, Unity Health Toronto, Toronto, ON, Canada
- Population Health Research Institute, Hamilton Health Sciences Corporation, Hamilton, ON, Canada
- Department of Pediatrics, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
- Department of Pediatrics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Hilary K Brown
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- ICES, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Women's College Research Institute, Toronto, ON, Canada
- Department of Health & Society, University of Toronto Scarborough, Toronto, ON, Canada
| | - Laura N Anderson
- Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street W, Hamilton, ON, L8S 4L8, Canada.
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada.
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11
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Ji N, Johnson M, Eckel SP, Gauderman WJ, Chavez TA, Berhane K, Faham D, Lurmann F, Pavlovic NR, Grubbs BH, Lerner D, Habre R, Farzan SF, Bastain TM, Breton CV. Prenatal ambient air pollution exposure and child weight trajectories from the 3rd trimester of pregnancy to 2 years of age: a cohort study. BMC Med 2023; 21:341. [PMID: 37674158 PMCID: PMC10483706 DOI: 10.1186/s12916-023-03050-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/25/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Prenatal air pollution exposure may increase risk for childhood obesity. However, few studies have evaluated in utero growth measures and infant weight trajectories. This study will evaluate the associations of prenatal exposure to ambient air pollutants with weight trajectories from the 3rd trimester through age 2 years. METHODS We studied 490 pregnant women who were recruited from the Maternal and Development Risks from Environmental and Social Stressors (MADRES) cohort, which comprises a low-income, primarily Hispanic population in Los Angeles, California. Nitrogen dioxide (NO2), particulate matter < 10 µm (PM10), particulate matter < 2.5 µm (PM2.5), and ozone (O3) concentrations during pregnancy were estimated from regulatory air monitoring stations. Fetal weight was estimated from maternal ultrasound records. Infant/child weight measurements were extracted from medical records or measured during follow-up visits. Piecewise spline models were used to assess the effect of air pollutants on weight, overall growth, and growth during each period. RESULTS The mean (SD) prenatal exposure concentrations for NO2, PM2.5, PM10, and O3 were 16.4 (2.9) ppb, 12.0 (1.1) μg/m3, 28.5 (4.7) μg/m3, and 26.2 (2.9) ppb, respectively. Comparing an increase in prenatal average air pollutants from the 10th to the 90th percentile, the growth rate from the 3rd trimester to age 3 months was significantly increased (1.55% [95%CI 1.20%, 1.99%] for PM2.5 and 1.64% [95%CI 1.27%, 2.13%] for NO2), the growth rate from age 6 months to age 2 years was significantly decreased (0.90% [95%CI 0.82%, 1.00%] for NO2), and the attained weight at age 2 years was significantly lower (- 7.50% [95% CI - 13.57%, - 1.02%] for PM10 and - 7.00% [95% CI - 11.86%, - 1.88%] for NO2). CONCLUSIONS Prenatal ambient air pollution was associated with variable changes in growth rate and attained weight from the 3rd trimester to age 2 years. These results suggest continued public health benefits of reducing ambient air pollution levels, particularly in marginalized populations.
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Affiliation(s)
- Nan Ji
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | | | - Sandrah P Eckel
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - William J Gauderman
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Thomas A Chavez
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Kiros Berhane
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, 10032, USA
| | - Dema Faham
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Fred Lurmann
- Sonoma Technology Inc., Petaluma, CA, 94954, USA
| | | | - Brendan H Grubbs
- Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90089, USA
| | | | - Rima Habre
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Shohreh F Farzan
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Theresa M Bastain
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA
| | - Carrie V Breton
- Division of Environmental Health, Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1845 N Soto St, MC 9239, Los Angeles, CA, 90039, USA.
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12
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Walters W, Ley C, Hastie T, Ley R, Parsonnet J. A modified Michaelis-Menten equation estimates growth from birth to 3 years in healthy babies in the US. RESEARCH SQUARE 2023:rs.3.rs-2375831. [PMID: 36711501 PMCID: PMC9882604 DOI: 10.21203/rs.3.rs-2375831/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background and Objectives Standard pediatric growth curves cannot be used to impute missing height or weight measurements in individual children. The Michaelis-Menten equation, used for characterizing substrate-enzyme saturation curves, has been shown to model growth in many organisms including nonhuman vertebrates. We investigated this equation could be used to interpolate missing growth data in children in the first three years of life. Methods We developed a modified Michaelis-Menten equation and compared expected to actual growth, first in a local birth cohort (N=97) then in a large, outpatient, pediatric sample (N=14,695). Results The modified Michaelis-Menten equation showed excellent fit for both infant weight (median RMSE: boys: 0.22kg [IQR:0.19; 90%<0.43]; girls: 0.20kg [IQR:0.17; 90%<0.39]) and height (median RMSE: boys: 0.93cm [IQR:0.53; 90%<1.0]; girls: 0.91cm [IQR:0.50;90%<1.0]). Growth data were modeled accurately with as few as four values from routine well-baby visits in year 1 and seven values in years 1-3; birth weight or length was essential for best fit. Conclusions A modified Michaelis-Menten equation accurately describes growth in healthy babies aged 0-36 months, allowing interpolation of missing weight and height values in individual longitudinal measurement series. The growth pattern in healthy babies in resource-rich environments mirrors an enzymatic saturation curve.
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Affiliation(s)
| | | | | | - Ruth Ley
- Max Plank Institute for Developmental Biology
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13
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Walters W, Ley C, Hastie T, Ley R, Parsonnet J. A modified Michaelis-Menten equation estimates growth from birth to 3 years in healthy babies in the US. RESEARCH SQUARE 2023:rs.3.rs-2375831. [PMID: 36711501 PMCID: PMC9882604 DOI: 10.21203/rs.3.rs-2375831/v2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/13/2024]
Abstract
Background and Objectives Standard pediatric growth curves cannot be used to impute missing height or weight measurements in individual children. The Michaelis-Menten equation, used for characterizing substrate-enzyme saturation curves, has been shown to model growth in many organisms including nonhuman vertebrates. We investigated this equation could be used to interpolate missing growth data in children in the first three years of life. Methods We developed a modified Michaelis-Menten equation and compared expected to actual growth, first in a local birth cohort (N=97) then in a large, outpatient, pediatric sample (N=14,695). Results The modified Michaelis-Menten equation showed excellent fit for both infant weight (median RMSE: boys: 0.22kg [IQR:0.19; 90%<0.43]; girls: 0.20kg [IQR:0.17; 90%<0.39]) and height (median RMSE: boys: 0.93cm [IQR:0.53; 90%<1.0]; girls: 0.91cm [IQR:0.50;90%<1.0]). Growth data were modeled accurately with as few as four values from routine well-baby visits in year 1 and seven values in years 1-3; birth weight or length was essential for best fit. Conclusions A modified Michaelis-Menten equation accurately describes growth in healthy babies aged 0-36 months, allowing interpolation of missing weight and height values in individual longitudinal measurement series. The growth pattern in healthy babies in resource-rich environments mirrors an enzymatic saturation curve.
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Affiliation(s)
| | | | | | - Ruth Ley
- Max Plank Institute for Developmental Biology
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14
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O'Keeffe LM, Tilling K, Bell JA, Walsh PT, Lee MA, Lawlor DA, Davey Smith G, Kearney PM. Sex-specific trajectories of molecular cardiometabolic traits from childhood to young adulthood. Heart 2023; 109:674-685. [PMID: 36914250 PMCID: PMC10176380 DOI: 10.1136/heartjnl-2022-321347] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 11/15/2022] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND The changes which typically occur in molecular causal risk factors and predictive biomarkers for cardiometabolic diseases across early life are not well characterised. METHODS We quantified sex-specific trajectories of 148 metabolic trait concentrations including various lipoprotein subclasses from age 7 years to 25 years. Data were from 7065 to 7626 offspring (11 702 to14 797 repeated measures) of the Avon Longitudinal Study of Parents and Children birth cohort study. Outcomes were quantified using nuclear magnetic resonance spectroscopy at 7, 15, 18 and 25 years. Sex-specific trajectories of each trait were modelled using linear spline multilevel models. RESULTS Females had higher very-low-density lipoprotein (VLDL) particle concentrations at 7 years. VLDL particle concentrations decreased from 7 years to 25 years with larger decreases in females, leading to lower VLDL particle concentrations at 25 years in females. For example, females had a 0.25 SD (95% CI 0.20 to 0.31) higher small VLDL particle concentration at 7 years; mean levels decreased by 0.06 SDs (95% CI -0.01 to 0.13) in males and 0.85 SDs (95% CI 0.79 to 0.90) in females from 7 years to 25 years, leading to 0.42 SDs (95% CI 0.35 to 0.48) lower small VLDL particle concentrations in females at 25 years. Females had lower high-density lipoprotein (HDL) particle concentrations at 7 years. HDL particle concentrations increased from 7 years to 25 years with larger increases among females leading to higher HDL particle concentrations in females at 25 years. CONCLUSION Childhood and adolescence are important periods for the emergence of sex differences in atherogenic lipids and predictive biomarkers for cardiometabolic disease, mostly to the detriment of males.
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Affiliation(s)
- Linda M O'Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Kate Tilling
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Joshua A Bell
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Patrick T Walsh
- School of Public Health, University College Cork, Cork, Ireland
| | - Matthew A Lee
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Deborah A Lawlor
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - George Davey Smith
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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15
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O’Neill KN, Aubrey E, Howe LD, Stergiakouli E, Rodriguez S, Kearney PM, O’Keeffe LM. Mitochondrial DNA haplogroups and trajectories of cardiometabolic risk factors during childhood and adolescence: A prospective cohort study. PLoS One 2023; 18:e0284226. [PMID: 37043466 PMCID: PMC10096512 DOI: 10.1371/journal.pone.0284226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 03/27/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND Mitochondria are organelles responsible for converting glucose into energy. Mitochondrial DNA is exclusively maternally inherited. The role of mitochondrial DNA haplogroups in the aetiology of cardiometabolic disease risk is not well understood. METHODS Sex-specific associations between common European mitochondrial DNA haplogroups (H, U, J, T, K, V, W, I and X) and trajectories of cardiometabolic risk factors from birth to 18 years were examined in a prospective cohort. Cardiometabolic risk factors measured from birth/mid-childhood to 18 years included body mass index (BMI), fat and lean mass, systolic and diastolic blood pressure, pulse rate, high-density lipoprotein cholesterol (HDL-c), non-HDL-c and triglycerides. Fractional polynomial and linear spline multilevel models explored the sex-specific association between haplogroups and risk factor trajectories. RESULTS Among a total of 7,954 participants with 79,178 repeated measures per outcome, we found no evidence that haplogroups U, T, J, K and W were associated with cardiometabolic risk factors compared to haplogroup H. In females, haplogroup V was associated with 4.0% (99% CI: -7.5, -0.6) lower BMI at age one but associations did not persist at age 18. Haplogroup X was associated with 1.3kg (99% CI: -2.5, -0.2) lower lean mass at age 9 which persisted at 18. Haplogroup V and X were associated with 9.3% (99% CI: -0.4, 19.0) and 16.4% (99% CI: -0.5,33.3) lower fat mass at age 9, respectively, although confidence intervals spanned the null and associations did not persist at 18. In males, haplogroup I was associated with 2.4% (99% CI: -0.5, 5.3) higher BMI at age 7; widening to 5.1% (99% CI: -0.5, 10.6) at 18 with confidence intervals spanning the null. CONCLUSIONS Our study demonstrated little evidence of sex-specific associations between mitochondrial DNA haplogroups and cardiometabolic risk factors.
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Affiliation(s)
- Kate N. O’Neill
- School of Public Health, University College Cork, Cork, Ireland
| | - Emily Aubrey
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Laura D. Howe
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Evie Stergiakouli
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | - Santiago Rodriguez
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
| | | | - Linda M. O’Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School, Bristol, United Kingdom
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16
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Deveci AC, Keown-Stoneman CDG, Maguire JL, O'Connor DL, Anderson LN, Dennis CL, Birken CS. Maternal BMI in the preconception period, and association with child zBMI growth rates. Pediatr Obes 2023; 18:e12999. [PMID: 36573480 DOI: 10.1111/ijpo.12999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/05/2022] [Accepted: 12/12/2022] [Indexed: 12/28/2022]
Abstract
BACKGROUND Elevated body mass index (BMI) and rapid growth in early childhood are important predictors of obesity risk. The association between maternal preconception BMI and child growth rates is unclear. OBJECTIVES To assess the association between measured maternal preconception BMI and child age- and sex- standardized WHO BMI z-score (zBMI) growth rates and mean zBMI, in children aged 0-10 years old. METHODS A longitudinal cohort study was conducted with children (n = 499) enrolled in The Applied Research Group for Kids (TARGet Kids!) primary care practice-based research cohort. Maternal BMI was measured during the preconception period, defined as the 2 years prior to pregnancy. Repeated measures of child weight and height were obtained between 0 and 10 years of age. Linear mixed models were used to evaluate the association between maternal BMI and child zBMI growth rates and mean zBMI. RESULTS Maternal preconception BMI was associated with child zBMI growth rate during some growth periods, with the strongest association from age 0 to 4 months; a 5 kg/m2 higher maternal BMI was associated with 0.031 zBMI SD unit/mo higher growth rate (p = 0.004), and 0.186 SD unit higher mean child zBMI (p = 0.0002). CONCLUSIONS Maternal preconception BMI was associated with growth rate and mean zBMI in early childhood. The preconception period may be an important target for health interventions to promote healthy child growth rate and weight outcomes.
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Affiliation(s)
- Arin C Deveci
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada
| | - Charles D G Keown-Stoneman
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Jonathon L Maguire
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.,Department of Pediatrics, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.,Department of Pediatrics, St. Michael's Hospital, Toronto, Canada
| | - Deborah L O'Connor
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.,Translational Medicine, SickKids Research Institute, Toronto, Canada.,Department of Paediatrics, Mount Sinai Health, Toronto, Canada
| | - Laura N Anderson
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
| | - Cindy-Lee Dennis
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada.,Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Catherine S Birken
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
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17
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O'Keeffe LM, Yelverton CA, Bartels HC, O'Neill KN, McDonnell C, McAuliffe FM. Application of multilevel linear spline models for analysis of growth trajectories in a cohort with repeat antenatal and postnatal measures of growth: a prospective cohort study. BMJ Open 2023; 13:e065701. [PMID: 36972957 PMCID: PMC10069489 DOI: 10.1136/bmjopen-2022-065701] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
OBJECTIVES To model trajectories of antenatal and postnatal growth using linear spline multilevel models. DESIGN Prospective cohort study. SETTING Maternity hospital in Dublin, Ireland. PARTICIPANTS 720-759 mother-child pairs from the ROLO study (initially a randomised control trial of a low glycaemic index diet in pregnancy to prevent recurrence of macrosomia [birth weight >4 kg]). PRIMARY OUTCOMES Trajectories of growth from 20 weeks gestation (abdominal circumference [AC], head circumference [HC] and weight) or birth (length/height) to 5 years. RESULTS Over 50% of women had third-level education and 90% were of white ethnicity. Women were a mean (SD) age of 32 years (4.2) at recruitment. The best fitting model for AC, HC and weight included a model with 5 linear spline periods. The best fitting models for length/height included a model with 3 linear spline periods from birth to 6 months, 6 months to 2 years and 2 years to 5 years. Comparison of observed and predicted values for each model demonstrated good model fit. For all growth measures, growth rates were generally fastest in pregnancy or immediately post partum (for length/height), with rates of growth slowing after birth and becoming slower still as infancy and childhood progressed. CONCLUSION We demonstrate the application of multilevel linear spline models for examining growth trajectories when both antenatal and postnatal measures of growth are available. The approach may be useful for cohort studies or randomised control trials with repeat prospective assessments of growth.
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Affiliation(s)
- Linda M O'Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, University of Bristol, Bristol, UK
- Population Health Sciences, University of Bristol, Bristol Medical School, Bristol, UK
| | - Cara A Yelverton
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland
| | - Helena C Bartels
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland
| | - Kate N O'Neill
- School of Public Health, University College Cork, Cork, Ireland
| | - Ciara McDonnell
- Department of Paediatric Endocrinology & Diabetes, Children's Health Ireland at Temple Street, Dublin, Ireland
- Discipline of Paediatrics, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Fionnuala M McAuliffe
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, Dublin, Ireland
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18
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Chatelan A, Rouche M, Kelly C, Fismen AS, Pedroni C, Desbouys L, Castetbon K. Tax on sugary drinks and trends in daily soda consumption by family affluence: an international repeated cross-sectional survey among European adolescents. Am J Clin Nutr 2023; 117:576-585. [PMID: 36775689 DOI: 10.1016/j.ajcnut.2023.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND The WHO recommends soda taxes to reduce sugar consumption, but the effect across socioeconomic groups is unclear. OBJECTIVES We assessed 16-y trends in daily soda consumption among adolescents in 4 European countries with a soda tax and 5 comparison countries, by family affluence. METHODS Five rounds of the international "Health Behaviour in School-Aged Children" school-based survey were used (school years 2001/2002 to 2017/2018, repeated cross-sectional design). Finland, France, Belgium, and Portugal introduced or updated a soda tax during this period. For comparison, we selected 5 neighboring countries without such a tax. Nationally representative samples of adolescents aged 13 and 15 y (n = 165,521; 51.2% girls) completed a standardized questionnaire, including a question on soda consumption frequency. Using the family affluence scale (FAS), we categorized adolescents into lower-, middle- or higher-affluent groups. Changes in daily soda consumption were assessed in each country independently. RESULTS Before taxation, daily soda consumption was more likely among lower-affluent adolescents in France and Belgium (P < 0.001, socioeconomic inequalities) and was similar across FAS groups in Finland and Portugal (no inequalities). After the tax, daily soda consumption was reduced across all FAS groups in Finland, Belgium, and Portugal (Pinteractions ≥ 0.33). In France, a posttax decrease was observed only among lower-affluent adolescents (ORlower, 0.76; 95% CI: 0.60, 0.96; reduced inequalities). During the same periods, socioeconomic patterns remained stable in 3 comparison countries (Pinteractions ≥ 0.38), and larger reductions in daily soda consumption were observed among middle- or higher-affluent adolescents compared with lower-affluent adolescents in the remaining 2 comparison countries (Pinteractions ≤ 0.08, increased inequalities). CONCLUSIONS Socioeconomic patterns did not change after the tax implementation in 3 out of 4 countries, and socioeconomic inequalities were reduced in France. Taxing sodas might be an effective measure to attenuate, or at least not exacerbate, socioeconomic inequalities in adolescent daily soda consumption. Am J Clin Nutr 20XX;xx:xx-xx.
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Affiliation(s)
- Angeline Chatelan
- School of Public Health, Université libre de Bruxelles, Brussels, Belgium; Department of Nutrition and Dietetics, Geneva School of Health Sciences, HES-SO University of Applied Sciences and Arts Western Switzerland, Geneva, Switzerland.
| | - Manon Rouche
- School of Public Health, Université libre de Bruxelles, Brussels, Belgium
| | - Colette Kelly
- Health Promotion Research Centre, National University of Ireland Galway, Galway, Ireland
| | - Anne-Siri Fismen
- Department of Health Promotion and Centre for Evaluation of Public Health Measures, Norwegian Institute of Public Health, Bergen, Norway
| | - Camille Pedroni
- School of Public Health, Université libre de Bruxelles, Brussels, Belgium
| | - Lucille Desbouys
- School of Public Health, Université libre de Bruxelles, Brussels, Belgium
| | - Katia Castetbon
- School of Public Health, Université libre de Bruxelles, Brussels, Belgium
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19
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Vinther JL, Ekstrøm CT, Sørensen TIA, Cederkvist L, Lawlor DA, Andersen AMN. Gestational age and trajectories of body mass index and height from birth through adolescence in the Danish National Birth Cohort. Sci Rep 2023; 13:3298. [PMID: 36843043 PMCID: PMC9968714 DOI: 10.1038/s41598-023-30123-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 02/16/2023] [Indexed: 02/27/2023] Open
Abstract
Preterm birth is associated with smaller body dimensions at birth. The impact on body size in later life, measured by body mass index (BMI) and height, remains unclear. A prospective register-based cohort study with 62,625 singletons from the Danish National Birth Cohort born 1996-2003 for whom information on gestational age (GA) at birth, length or weight at birth, and at least two growth measurements scheduled at the ages of 5 and 12 months, and 7, 11 and 18 years were available. Linear mixed effects with splines, stratified by sex, and adjusted for confounders were used to estimate standardised BMI and height. GA was positively associated with BMI in infancy, but differences between preterm and term children declined with age. By age 7, preterm children had slightly lower BMI than term children, whereas no difference was observed by adolescence (mean difference in BMI z-score - 0.28 to 0.15). GA was strongly associated with height in infancy, but mean differences between individuals born preterm and term declined during childhood. By adolescence, the most preterm individuals remained shorter than their term peers (mean difference in height z-score from - 1.00 to - 0.28). The lower BMI in preterm infants relative to term infants equalizes during childhood, such that by adolescence there is no clear difference. Height is strongly positively associated with GA in early childhood, whilst by end of adolescence individuals born preterm remain slightly shorter than term peers.
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Affiliation(s)
- Johan L. Vinther
- grid.5254.60000 0001 0674 042XSection of Epidemiology, Department of Public Health, University of Copenhagen, Bartholinsgade 6Q, 2nd Fl., 1356 Copenhagen, Denmark
| | - Claus T. Ekstrøm
- grid.5254.60000 0001 0674 042XSection of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Thorkild I. A. Sørensen
- grid.5254.60000 0001 0674 042XSection of Epidemiology, Department of Public Health, University of Copenhagen, Bartholinsgade 6Q, 2nd Fl., 1356 Copenhagen, Denmark ,grid.5254.60000 0001 0674 042XNovo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Luise Cederkvist
- grid.5254.60000 0001 0674 042XSection of Epidemiology, Department of Public Health, University of Copenhagen, Bartholinsgade 6Q, 2nd Fl., 1356 Copenhagen, Denmark
| | - Deborah A. Lawlor
- grid.5337.20000 0004 1936 7603Population Health Science, Bristol Medical School, Bristol, BS8 2BN UK ,grid.5337.20000 0004 1936 7603MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, BS8 2BN UK
| | - Anne-Marie Nybo Andersen
- grid.5254.60000 0001 0674 042XSection of Epidemiology, Department of Public Health, University of Copenhagen, Bartholinsgade 6Q, 2nd Fl., 1356 Copenhagen, Denmark
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20
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Paternal BMI in the preconception period, and the association with child zBMI. Int J Obes (Lond) 2023; 47:280-287. [PMID: 36737513 DOI: 10.1038/s41366-023-01261-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND Rapid growth and excess weight in early childhood are associated with obesity risk. While maternal preconception BMI has been identified as a potential risk factor, the role of paternal preconception BMI is less clear. OBJECTIVES To examine the association between paternal preconception BMI and age- and sex-standardized WHO BMI z-score (zBMI) growth rates, zBMI, and weight status, in 0- to 10-year-old children. To determine whether these associations differed by child sex and maternal preconception weight status. METHODS A longitudinal cohort study was conducted through The Applied Research Group for Kids (TARGet Kids!). Children (n = 218) underwent repeated measures of height and weight from birth to 10 years old. Piecewise linear mixed models were used to assess the association between paternal preconception BMI and child zBMI growth rates (zBMI SD units/month) between 0, 4, 30, 48 and 120 months of age. Linear mixed models were used to examine the association with child zBMI, and logistic generalized estimation equations (GEE) were used to assess the association with child weight status. Child sex and maternal preconception weight status were tested as effect modifiers. RESULTS Paternal preconception BMI was associated with child zBMI growth rate, mean zBMI and weight status in boys, but not girls. A 5 kg/m2 higher paternal preconception BMI was associated with approximately 0.01 zBMI SD unit/month higher growth rate for boys born to mothers with preconception overweight. Higher paternal BMI was associated with higher mean zBMI and increased odds of overweight and obesity in boys, with greater effects seen when mothers had preconception overweight compared to normal weight. CONCLUSION Paternal preconception BMI was associated with child zBMI growth rate, zBMI and weight status in boys, with greater effects when the biological mother had preconception overweight or obesity. Further understanding of sex differences in paternal preconception weight effects in children is needed.
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21
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Bartels HC, O'Keeffe LM, Yelverton CA, O'Neill KN, Geraghty AA, O'Brien EC, Killeen SL, McDonnell C, McAuliffe FM. Associations between maternal metabolic parameters during pregnancy and fetal and child growth trajectories from 20 weeks' gestation to 5 years of age: Secondary analysis from the ROLO longitudinal birth cohort study. Pediatr Obes 2023; 18:e12976. [PMID: 36102219 PMCID: PMC10078394 DOI: 10.1111/ijpo.12976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/09/2022] [Accepted: 08/15/2022] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To examine the association between maternal metabolic parameters in pregnancy and growth trajectories up to 5 years of age. METHODS Data from mother-child pairs who participated in the ROLO study, a randomized trial examining the impact of a low glycaemic index diet on the recurrence of macrosomia, were analysed. Fetal and child growth trajectories were developed from longitudinal measurements from 20 weeks gestation up to 5 years of age. We examined associations between maternal fasting glucose, insulin, HOMA-IR and leptin, taken in early pregnancy (14-16 weeks) and late pregnancy (28 weeks), and weight (kg) and abdominal circumference (cm) trajectories using linear spline multilevel models. RESULTS We found no strong evidence of associations between any maternal metabolic parameters and fetal to childhood weight and abdominal circumference trajectories from 20 weeks gestation to 5 years. CONCLUSION In a cohort of women with obesity with infants at risk of macrosomia, maternal metabolic markers were not strongly associated with trajectories of weight or abdominal circumference from 20 weeks gestation to 5 years of age.
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Affiliation(s)
- Helena C Bartels
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Linda M O'Keeffe
- School of Public Health, University College Cork, Cork, Ireland.,MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK.,Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Cara A Yelverton
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Kate N O'Neill
- School of Public Health, University College Cork, Cork, Ireland
| | - Aisling A Geraghty
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Eileen C O'Brien
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Sarah Louise Killeen
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
| | - Ciara McDonnell
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland.,Department of Pediatric Endocrinology & Diabetes, Children's Health Ireland, Temple Street Hospital, Dublin, Ireland
| | - Fionnuala M McAuliffe
- UCD Perinatal Research Centre, School of Medicine, University College Dublin, National Maternity Hospital, Dublin, Ireland
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22
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Anderson CE, Whaley SE, Goran MI. Lactose-reduced infant formula with corn syrup solids and obesity risk among participants in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). Am J Clin Nutr 2022; 116:1002-1009. [PMID: 35998087 PMCID: PMC10157812 DOI: 10.1093/ajcn/nqac173] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/09/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), a federal nutrition assistance program supporting low-income families, serves half of United States-born infants, most of whom are issued infant formula by age 2 mo. Obesity prevalence is high among children of low-income households, particularly formula-fed children. OBJECTIVES This study was conducted to determine whether glucose-based lactose-reduced infant formula made with corn syrup solids (CSSF) is associated with increased obesity risk compared with non-CSSFs that are lactose based. DESIGN WIC administrative data on infant formula issuance and child weights and lengths were collected prospectively in Southern California between 2012 and 2020. Included children stopped breastfeeding by 3 mo, were issued cow's milk-based formula through 12 mo, and were enrolled through the final year of WIC eligibility at age 4 y ( n = 15,246). CSSF issuance was assessed continuously (range 0-13 mo) and dichotomously (any, none). Poisson and linear risk regression with robust SE estimates generated risk ratios (RRs), risk differences, and CIs for child obesity [BMI for age (in kg/m 2) ≥95th percentile]. RESULTS Any CSSF was issued to 23% of children, and 25% were obese at age 4 y. Children with any CSSF issuance had 10% higher obesity risk (RR: 1.10; 95% CI: 1.02, 1.20) than children with no CSSF issuance at age 2 y. Associations remained significant through age 4 y (RR: 1.07; 95% CI: 1.01,1.14), independent of maternal weight status, total formula issued and breastfeeding duration, and were not modified by child race or sex. Obesity risk increased with additional mo of CSSF exposure, reaching 16% higher risk (RR: 1.16; 95% CI: 1.05, 1.28) at age 2 y for children with 12 mo of CSSF. CONCLUSIONS CSSF issuance is associated with increased obesity risk in the first 5 y life in a dose dependent manner, independently of maternal weight status, breastfeeding duration, and total formula issuance.
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Affiliation(s)
- Christopher E Anderson
- Division of Research and Evaluation, Public Health Foundation Enterprises (PHFE) WIC, a program of Heluna Health, Irwindale, CA, USA
| | - Shannon E Whaley
- Division of Research and Evaluation, Public Health Foundation Enterprises (PHFE) WIC, a program of Heluna Health, Irwindale, CA, USA
| | - Michael I Goran
- Department of Pediatrics, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA
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23
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He B, Li AM, Kwok MK, Au Yeung SL, Leung GM, Schooling CM. Association of growth patterns during infancy and puberty with lung function, wheezing and asthma in adolescents aged 17.5 years: evidence from ‘Children of 1997’ Hong Kong Chinese Birth Cohort. Int J Epidemiol 2022; 52:440-449. [PMID: 36153774 DOI: 10.1093/ije/dyac182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 09/06/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Rapid growth is related to adverse respiratory outcomes although possibly confounded or limited by growth modelling methods. We investigated the association of infant and pubertal growth with lung function, wheezing and asthma in a non-Western setting.
Methods
In Hong Kong’s ‘Children of 1997’ Chinese birth cohort (n = 8327), weight during infancy and weight, height and body mass index (BMI) during puberty were modelled using a super-imposition by translation and rotation model to identify (larger or smaller) size, (earlier or later) tempo and (slower or faster) velocity. Sex-specific associations with forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), FEV1/FVC (Global Lung function Initiative z-score) and self-reported wheezing and asthma at ∼17.5 years were assessed.
Results
For each fraction higher than average weight growth velocity during infancy, FVC was higher in boys (0.90 SD, 95% CI 0.35; 1.44) and girls (0.77 SD, 95% CI 0.24; 1.30), FEV1/FVC was lower (–0.74 SD, 95% CI –1.38; –0.10) and wheezing was higher (odds ratio 6.92, 95% CI 1.60; 29.99) in boys and an inverse association with FVC was observed for tempo but not for size. Associations for weight growth velocity in puberty were similar but weaker. Greater size and higher velocity of BMI growth was associated with higher FVC, lower FEV1/FVC and higher asthma and wheezing risk.
Conclusion
Accelerated infant and pubertal weight growth were associated with disproportionate lung size and airway growth, and higher risk of asthma; optimizing early-life growth patterns could be important.
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Affiliation(s)
- Baoting He
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
| | - Albert M Li
- Department of Pediatrics, The Chinese University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
| | - Man Ki Kwok
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
| | - Shiu Lun Au Yeung
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
| | - Gabriel M Leung
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
| | - C Mary Schooling
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong Special Administrative Region, P. R. China
- School of Public Health and Health Policy, City University of New York , New York, USA
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24
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O'Neill KN, Bell JA, Davey Smith G, Tilling K, Kearney PM, O'Keeffe LM. Puberty Timing and Sex-Specific Trajectories of Systolic Blood Pressure: a Prospective Cohort Study. Hypertension 2022; 79:1755-1764. [PMID: 35587023 PMCID: PMC9278704 DOI: 10.1161/hypertensionaha.121.18531] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
BACKGROUND Sex differences in systolic blood pressure (SBP) emerge during adolescence but the role of puberty is not well understood. We examined sex-specific changes in SBP preceding and following puberty and examined the impact of puberty timing on SBP trajectories in females and males. METHODS Trajectories of SBP before and after puberty and by timing of puberty in females and males in a contemporary birth cohort study were analyzed. Repeated measures of height from age 5 to 20 years were used to identify puberty timing (age at peak height velocity). SBP was measured on ten occasions from 3 to 24 years (N participants, 4062; repeated SBP measures, 29 172). Analyses were performed using linear spline multilevel models based on time before and after puberty and were adjusted for parental factors and early childhood factors. RESULTS Mean age at peak height velocity was 11.7 years (SD, 0.8) for females and 13.6 years (SD, 0.9) for males. Males had faster rates of increase in SBP before puberty leading to 10.19 mm Hg (95% CI, 6.80-13.57) higher mean SBP at puberty which remained similar at 24 years (mean difference, 11.43 mm Hg [95% CI, 7.22-15.63]). Puberty timing was associated with small transient differences in SBP trajectories postpuberty in both sexes and small differences at 24 years in females only. CONCLUSIONS A large proportion of the higher SBP observed in males compared with females in early adulthood is accrued before puberty. Interventions targeting puberty timing are unlikely to influence SBP in early adulthood.
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Affiliation(s)
- Kate N O'Neill
- School of Public Health, University College Cork, Ireland (K.N.O.N., P.M.K., L.M.O.K.)
| | - Joshua A Bell
- MRC Integrative Epidemiology Unit at the University of Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.).,Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.)
| | - George Davey Smith
- MRC Integrative Epidemiology Unit at the University of Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.).,Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.)
| | - Kate Tilling
- MRC Integrative Epidemiology Unit at the University of Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.).,Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.)
| | - Patricia M Kearney
- School of Public Health, University College Cork, Ireland (K.N.O.N., P.M.K., L.M.O.K.)
| | - Linda M O'Keeffe
- School of Public Health, University College Cork, Ireland (K.N.O.N., P.M.K., L.M.O.K.).,MRC Integrative Epidemiology Unit at the University of Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.).,Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom (J.A.B., G.D.S., K.T., L.M.O.K.)
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25
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McEvoy O, Cronin F, Brannigan R, Stanistreet D, Layte R. The role of family, school and neighbourhood in Explaining Inequalities in Physical Activity Trajectories between age 9 and 18. SSM Popul Health 2022; 19:101216. [PMID: 36124255 PMCID: PMC9482142 DOI: 10.1016/j.ssmph.2022.101216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/10/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
Differentials in physical activity (PA) between social and economic groups has been shown to contribute significantly to social gradients in health and life expectancy, yet relatively little is known about why differentials in PA emerge. This paper uses longitudinal data on a nationally representative sample of 6,216 young people aged between 9 and 18, from Ireland, to measure the role of family, school and neighbourhood level factors in accounting for differentials in PA trajectories between groups of young people, defined by level of maternal education, whilst adjusting for the individual characteristics of the young person (sex, age, personality, body mass index and health-status). Levels of PA fall significantly across the sample between 9 and 18, and the decline in PA is larger for the children of lower educated mothers. We find a clear gradient in PA at each age by maternal education for both males and females. Descriptive analyses found social gradients in the majority of our risk factors. Using multi-level, linear spline regression models to decompose differentials between groups, we find that family-level mechanisms account for the biggest proportion of the differential in PA for both males (50.8%) and females (35.1%). Differences in income across maternal education categories accounted for 24.1% of the differential for males and 14.7% among females, making it the second most effective mechanism in explaining the social patterning of PA. Neighbourhood-level processes resulted in a modest reduction in the same differential, while school level processes had the effect of equalising differences in PA across maternal education groups. The potential social determinants of inequalities in physical activity were outlined. The role of family, school and neighbourhood in explaining these inequalities was quantified. The cumulative effect of social environment was observed over a 10-year period. Family-level characteristics were identified as the most effective explanatory mechanism. Highly educated mothers were observed to be enrolling their children in organised sport.
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Affiliation(s)
- Olivia McEvoy
- Department of Sociology, School of Social Sciences and Philosophy, Trinity College, Dublin, Ireland
- Corresponding author.
| | - Frances Cronin
- Department of Public Health and Epidemiology, Royal College of Surgeons in Ireland, Ireland
| | - Ross Brannigan
- Department of Public Health and Epidemiology, Royal College of Surgeons in Ireland, Ireland
| | - Debbi Stanistreet
- Department of Public Health and Epidemiology, Royal College of Surgeons in Ireland, Ireland
| | - Richard Layte
- Department of Sociology, School of Social Sciences and Philosophy, Trinity College, Dublin, Ireland
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26
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Kim J, Yang S, Moodie EEM, Obida M, Bornman R, Eskenazi B, Chevrier J. Prenatal Exposure to Insecticides and Weight Trajectories Among South African Children in the VHEMBE Birth Cohort. Epidemiology 2022; 33:505-513. [PMID: 35394964 PMCID: PMC9156531 DOI: 10.1097/ede.0000000000001487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Dichlorodiphenyltrichloroethane (DDT) or pyrethroid insecticides are sprayed inside dwellings for malaria vector control, resulting in high exposure to millions of people, including pregnant women. These chemicals disrupt endocrine function and may affect child growth. To our knowledge, few studies have investigated the potential impact of prenatal exposure to DDT or pyrethroids on growth trajectories. METHODS We investigated associations between gestational insecticide exposure and child growth trajectories in the Venda Health Examination of Mothers, Babies and their Environment, a birth cohort of 751 children born between 2012 and 2013 in South Africa. Based on child weight measured at follow-up and abstracted from medical records, we modeled weight trajectories from birth to 5 years using SuperImposition, Translation and Rotation, which estimated two child-specific parameters: size (average weight) and tempo (age at peak weight velocity). We estimated associations between peripartum maternal concentrations of serum DDT, dichlorodiphenyldichloroethylene, or urinary pyrethroid metabolites and SuperImposition, Translation and Rotation parameters using marginal structural models. RESULTS We observed that a 10-fold increase in maternal concentrations of the pyrethroid metabolite trans-3-(2,2,-dicholorvinyl)-2,2-dimethyl-cyclopropane carboxylic acid was associated with a 21g (95% confidence interval = -40, -1.6) smaller size among boys but found no association among girls (Pinteraction = 0.07). Estimates suggested that pyrethroids may be associated with earlier tempo but were imprecise. We observed no association with serum DDT or dichlorodiphenyldichloroethylene. CONCLUSIONS Inverse associations between pyrethroids and weight trajectory parameters among boys are consistent with hypothesized disruption of androgen pathways and with our previous research in this population, and support the endocrine-disrupting potential of pyrethroids in humans.
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Affiliation(s)
- Joanne Kim
- Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Seungmi Yang
- Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Erica E. M. Moodie
- Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - Muvhulawa Obida
- University of Pretoria Institute for Sustainable Malaria Control, School of Health Systems and Public Health, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Riana Bornman
- University of Pretoria Institute for Sustainable Malaria Control, School of Health Systems and Public Health, University of Pretoria, Pretoria, Gauteng, South Africa
| | - Brenda Eskenazi
- Center for Environmental Research and Children’s Health, School of Public Health, University of California, Berkeley, California, USA
| | - Jonathan Chevrier
- Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
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Jonas K, Lian W, Callahan J, Ruggero CJ, Clouston S, Reichenberg A, Carlson GA, Bromet EJ, Kotov R. The Course of General Cognitive Ability in Individuals With Psychotic Disorders. JAMA Psychiatry 2022; 79:659-666. [PMID: 35583896 PMCID: PMC9118026 DOI: 10.1001/jamapsychiatry.2022.1142] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/16/2022] [Indexed: 11/14/2022]
Abstract
Importance Schizophrenia is associated with major cognitive deficits and has been conceptualized as both a neurodevelopmental and a neurodegenerative disorder. However, when deficits develop and how they change over the course of illness is uncertain. Objective To trace cognition from elementary school to old age to test neurodevelopmental and neurodegenerative theories of psychotic disorders. Design, Setting, and Participants Data were taken from the Suffolk County Mental Health Project, a first-admission longitudinal cohort study of individuals with psychotic disorders. Participants were recruited from all 12 inpatient psychiatric facilities in Suffolk County, New York. This analysis concerns the 428 participants with at least 2 estimates of general cognitive ability. Data were collected between September 1989 and October 2019, and data were analyzed from January 2020 to October 2021. Exposures Psychiatric hospitalization for psychosis. Main Outcomes and Measures Preadmission cognitive scores were extracted from school and medical records. Postonset cognitive scores were based on neuropsychological testing at 6-month, 24-month, 20-year, and 25-year follow-ups. Results Of the 428 included individuals (212 with schizophrenia and 216 with other psychotic disorders), 254 (59.6%) were male, and the mean (SD) age at psychosis onset was 27 (9) years. Three phases of cognitive change were observed: normative, declining, and deteriorating. In the first phase, cognition was stable. Fourteen years before psychosis onset, those with schizophrenia began to experience cognitive decline at a rate of 0.35 intelligence quotient (IQ) points per year (95% CI, 0.29-0.42; P < .001), a significantly faster decline than those with other psychotic disorders (0.15 IQ points per year; 95% CI, 0.08-0.22, P < .001). At 22 years after onset, both groups declined at a rate of 0.59 IQ points per year (95% CI, 0.25-0.94; P < .001). Conclusions and Relevance In this cohort study, cognitive trajectories in schizophrenia were consistent with both a neurodevelopmental and neurodegenerative pattern, resulting in a loss of 16 IQ points over the period of observation. Cognitive decline began long prior to psychosis onset, suggesting the window for primary prevention is earlier than previously thought. A window for secondary prevention emerges in the third decade of illness, when cognitive declines accelerate in individuals with schizophrenia and other psychotic disorders.
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Affiliation(s)
- Katherine Jonas
- Department of Psychiatry and Behavioral Health, Stony Brook University, Stony Brook, New York
| | - Wenxuan Lian
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York
| | | | | | - Sean Clouston
- Department of Family, Population and Preventive Medicine, Stony Brook University, Stony Brook, New York
| | - Avraham Reichenberg
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Evelyn J. Bromet
- Department of Psychiatry and Behavioral Health, Stony Brook University, Stony Brook, New York
| | - Roman Kotov
- Department of Psychiatry and Behavioral Health, Stony Brook University, Stony Brook, New York
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28
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Wootton RE, Riglin L, Blakey R, Agnew-Blais J, Caye A, Cadman T, Havdahl A, Gonçalves H, Menezes AMB, Wehrmeister FC, Rimfeld K, Davey Smith G, Eley TC, Rohde LA, Arseneault L, Moffitt TE, Stergiakouli E, Thapar A, Tilling K. Decline in attention-deficit hyperactivity disorder traits over the life course in the general population: trajectories across five population birth cohorts spanning ages 3 to 45 years. Int J Epidemiol 2022; 51:919-930. [PMID: 35403686 PMCID: PMC9189965 DOI: 10.1093/ije/dyac049] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 03/15/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Trajectories of attention-deficit hyperactivity disorder (ADHD) traits spanning early childhood to mid-life have not been described in general populations across different geographical contexts. Population trajectories are crucial to better understanding typical developmental patterns. METHODS We combined repeated assessments of ADHD traits from five population-based cohorts, spanning ages 3 to 45 years. We used two measures: (i) the Strengths and Difficulties Questionnaire (SDQ) hyperactive-inattentive subscale (175 831 observations, 29 519 individuals); and (ii) scores from DSM-referenced scales (118 144 observations, 28 685 individuals). Multilevel linear spline models allowed for non-linear change over time and differences between cohorts and raters (parent/teacher/self). RESULTS Patterns of age-related change differed by measure, cohort and country: overall, SDQ scores decreased with age, most rapidly declining before age 8 years (-0.157, 95% CI: -0.170, -0.144 per year). The pattern was generally consistent using DSM scores, although with greater between-cohort variation. DSM scores decreased most rapidly between ages 14 and 17 years (-1.32%, 95% CI: -1.471, -1.170 per year). Average scores were consistently lower for females than males (SDQ: -0.818, 95% CI: -0.856, -0.780; DSM: -4.934%, 95% CI: -5.378, -4.489). This sex difference decreased over age for both measures, due to an overall steeper decrease for males. CONCLUSIONS ADHD trait scores declined from childhood to mid-life, with marked variation between cohorts. Our results highlight the importance of taking a developmental perspective when considering typical population traits. When interpreting changes in clinical cohorts, it is important to consider the pattern of expected change within the general population, which is influenced by cultural context and measurement.
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Affiliation(s)
- Robyn E Wootton
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
- Nic Waals Institute, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Lucy Riglin
- Division of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
- Wolfson Centre for Young People’s Mental Health, Cardiff University, UK
| | - Rachel Blakey
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Jessica Agnew-Blais
- Department of Psychology, School of Biological and Chemical Science, Queen Mary University of London, London, UK
| | - Arthur Caye
- Department of Psychiatry, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- National Institute of Developmental Psychiatry for Children and Adolescents, Brazil
- ADHD and Developmental Psychiatry Programs, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Tim Cadman
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Alexandra Havdahl
- Nic Waals Institute, Lovisenberg Diaconal Hospital, Oslo, Norway
- Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
- PROMENTA Research Centre, Department of Psychology, University of Oslo, Oslo, Norway
| | - Helen Gonçalves
- Postgraduate Program in Epidemiology, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Ana M B Menezes
- Postgraduate Program in Epidemiology, Universidade Federal de Pelotas, Pelotas, Brazil
| | | | - Kaili Rimfeld
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
- Department of Psychology, Royal Holloway University of London, London, UK
| | - George Davey Smith
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Thalia C Eley
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Luis Augusto Rohde
- National Institute of Developmental Psychiatry for Children and Adolescents, Brazil
- ADHD and Developmental Psychiatry Programs, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Louise Arseneault
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Terrie E Moffitt
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
- Department of Psychology and Neuroscience, Duke University, Durham, NC, USA
| | - Evie Stergiakouli
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Anita Thapar
- Division of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
- Wolfson Centre for Young People’s Mental Health, Cardiff University, UK
| | - Kate Tilling
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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Infliximab Is Not Associated With a General Long-Term Weight Gain in Patients With Inflammatory Bowel Disease: A Nationwide Study. Am J Gastroenterol 2022; 117:777-784. [PMID: 35287136 DOI: 10.14309/ajg.0000000000001721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 03/02/2022] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Patients with Crohn's disease (CD) and ulcerative colitis (UC) may lose weight during periods of active disease and may gain weight when inflammation heals. Studies have hypothesized an association between antitumor necrosis factor-alpha (anti-TNF-α) and unintended weight gain during maintenance therapy, and this association has not been previously clarified. METHODS In a nationwide observational study based on Danish national health registries, we included patients who initiated therapy with infliximab and followed changes in weight during induction therapy (0-90 days) and maintenance therapy (91-270 days). The association between the use of infliximab and weight gain was analyzed by a multilevel mixed-effects linear regression model. RESULTS Among 851 patients with CD and UC who initiated infliximab therapy, long-term weight gain was not observed during maintenance therapy in most of the patients. Women with CD who were underweight at the initiation of therapy had an average weight gain of 7.5 kg. Men and women with CD and UC with normal or increased body mass index had an average weight gain of <2 kg during maintenance therapy. Underweight men with CD and UC gained 2.9 kg (95% confidence interval 2.1-3.6) and 2.9 kg (95% confidence interval 1.9-3.9), respectively, in the first 90 days, although neither group had statistically significant weight gain in the maintenance period. Less than 3% of the patients had weight gain greater than 10% of their baseline body weight during the study period. DISCUSSION Weight gain among patients treated with anti-TNF-α therapies is unlikely to be due to an effect from anti-TNF-α therapy.
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Association of Cesarean Delivery with Trajectories of Growth and Body Composition in Preschool Children. Nutrients 2022; 14:nu14091806. [PMID: 35565774 PMCID: PMC9103341 DOI: 10.3390/nu14091806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/23/2022] [Accepted: 04/24/2022] [Indexed: 12/04/2022] Open
Abstract
This study aimed to examine the association of cesarean delivery with trajectories of growth and body composition in preschool children. This ambidirectional cohort study was conducted between 2017 and 2020 in China. Information on the delivery mode, weight, and length/height of the children measured at routine healthcare visits was obtained from maternal and child health records. For three years while in kindergarten, children’s body mass index (BMI), fat mass index (FMI), fat-free mass index (FFMI), and percentage of body fat (FM%) were repeatedly measured. A BMI z score (zBMI) was calculated and standardized to WHO measures, and overweight and obesity were defined using the WHO reference. After adjustment for maternal age, maternal education, annual family income, prepregnancy BMI, gestational weight gain, gravidity, parity, gestational age, child sex, birthweight, breastfeeding duration, and the parent-reported dietary intake of the children, children born via cesarean delivery (n = 1992) versus those born vaginally (n = 1578) had higher zBMI growth rates beyond 36 months (β: 0.003; 95% CI: 0.001, 0.005 SD units/month) and elevated levels of FMI (β: 0.097; 95% CI: 0.026, 0.168 kg/m2), FM% (β: 0.402; 95% CI: 0.058, 0.745%) and zBMI (β: 0.073; 95% CI: 0.012, 0.133 units), but not FFMI (β: 0.022; 95% CI: −0.022, 0.066 kg/m2). The adjusted OR of overweight and obesity was 1.21 (95% CI: 1.04, 1.40). Cesarean delivery likely elevated zBMI growth rates and increased the risk of overweight and obesity in preschool children, with the elevation of fat mass but not fat-free mass.
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Wake SK, Zewotir T, Muluneh EK. Studying latent change process in height growth of children in Ethiopia, India, Peru and Vietnam. BMC Pediatr 2022; 22:208. [PMID: 35421977 PMCID: PMC9008932 DOI: 10.1186/s12887-022-03269-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 04/06/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Anthropometric measurements of healthy children differ in different parts of the world due to the diverse ethnicity and cultural backgrounds of families. In longitudinal studies, appropriate modeling of repeated anthropometric measures can improve the understanding of patterns of change, determinants of patterns, and variations in patterns of change over time. The objective of this study was to examine the latent change in physical height of children in Ethiopia, India, Peru, and Vietnam. METHOD Longitudinal data of 6601 children aged 1 to 15 years were obtained from the Young Lives cohort study. The data were analyzed using a latent basis growth curve model. RESULTS The findings of the study revealed that the rates of growth did not remain constant across the time intervals, which indicates the nonlinearity of the growth trajectory over time. For instance, children had the highest rate of growth between age 1 and 5 years, then between age 8 and 12 years, and a low rate of growth was observed between age 12 and 15 years. At the first measurement occasion (age 1 year) females were 0.826 cm (p < 0.0001) times shorter than males. The mean height at one year of age ranged from 72.13 cm in Ethiopia to 72.62 cm in India. Children in India and Vietnam had higher mean height at age one year. However, no significant difference in mean height at age one year was found between Ethiopian and Peruvian children, ([Formula: see text]). Peruvian and Vietnamese children grew at a faster rate, while Indian children grew at a slower rate than Ethiopian children. CONCLUSION We found substantial latent growth variations among children in four low- and middle-income countries. The latent trajectories differed by gender and country. The outcomes of the study could aid in detecting inequalities in children's height growth.
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Affiliation(s)
| | - Temesgen Zewotir
- School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Durban, South Africa
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Exposure to the World Trade Center disaster and test performance among New York City public school students over time, 1998–2003. SSM - MENTAL HEALTH 2022. [DOI: 10.1016/j.ssmmh.2022.100096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Elhakeem A, Hughes RA, Tilling K, Cousminer DL, Jackowski SA, Cole TJ, Kwong ASF, Li Z, Grant SFA, Baxter-Jones ADG, Zemel BS, Lawlor DA. Using linear and natural cubic splines, SITAR, and latent trajectory models to characterise nonlinear longitudinal growth trajectories in cohort studies. BMC Med Res Methodol 2022; 22:68. [PMID: 35291947 PMCID: PMC8925070 DOI: 10.1186/s12874-022-01542-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 02/11/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Longitudinal data analysis can improve our understanding of the influences on health trajectories across the life-course. There are a variety of statistical models which can be used, and their fitting and interpretation can be complex, particularly where there is a nonlinear trajectory. Our aim was to provide an accessible guide along with applied examples to using four sophisticated modelling procedures for describing nonlinear growth trajectories. METHODS This expository paper provides an illustrative guide to summarising nonlinear growth trajectories for repeatedly measured continuous outcomes using (i) linear spline and (ii) natural cubic spline linear mixed-effects (LME) models, (iii) Super Imposition by Translation and Rotation (SITAR) nonlinear mixed effects models, and (iv) latent trajectory models. The underlying model for each approach, their similarities and differences, and their advantages and disadvantages are described. Their application and correct interpretation of their results is illustrated by analysing repeated bone mass measures to characterise bone growth patterns and their sex differences in three cohort studies from the UK, USA, and Canada comprising 8500 individuals and 37,000 measurements from ages 5-40 years. Recommendations for choosing a modelling approach are provided along with a discussion and signposting on further modelling extensions for analysing trajectory exposures and outcomes, and multiple cohorts. RESULTS Linear and natural cubic spline LME models and SITAR provided similar summary of the mean bone growth trajectory and growth velocity, and the sex differences in growth patterns. Growth velocity (in grams/year) peaked during adolescence, and peaked earlier in females than males e.g., mean age at peak bone mineral content accrual from multicohort SITAR models was 12.2 years in females and 13.9 years in males. Latent trajectory models (with trajectory shapes estimated using a natural cubic spline) identified up to four subgroups of individuals with distinct trajectories throughout adolescence. CONCLUSIONS LME models with linear and natural cubic splines, SITAR, and latent trajectory models are useful for describing nonlinear growth trajectories, and these methods can be adapted for other complex traits. Choice of method depends on the research aims, complexity of the trajectory, and available data. Scripts and synthetic datasets are provided for readers to replicate trajectory modelling and visualisation using the R statistical computing software.
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Affiliation(s)
- Ahmed Elhakeem
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK.
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
| | - Rachael A Hughes
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Kate Tilling
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Diana L Cousminer
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, USA
- Center for Spatial and Functional Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stefan A Jackowski
- College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Tim J Cole
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Alex S F Kwong
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
- Division of Psychiatry, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Zheyuan Li
- School of Mathematics and Statistics, Henan University, Kaifeng, Henan, China
- Department of Statistics and Actuarial Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Struan F A Grant
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, USA
- Center for Spatial and Functional Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | - Babette S Zemel
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Division of Gastroenterology, Hepatology and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Deborah A Lawlor
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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Vanoli J, Coull BA, Ettinger de Cuba S, Fabian PM, Carnes F, Massaro MA, Poblacion A, Bellocco R, Kloog I, Schwartz J, Laden F, Zanobetti A. Postnatal exposure to PM 2.5 and weight trajectories in early childhood. Environ Epidemiol 2022; 6:e181. [PMID: 35169661 PMCID: PMC8835545 DOI: 10.1097/ee9.0000000000000181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/19/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Inconsistent evidence has assessed the impact of air pollution exposure on children's growth trajectories. We investigated the role of 90-day average postnatal fine particulate matter (PM2.5) exposures by estimating the magnitude of effects at different ages, and the change in child weight trajectory by categories of exposure. METHODS We obtained weight values from electronic health records at each hospital visit (males = 1859, females = 1601) from birth to 6 years old children recruited into the Boston-based Children's HealthWatch cohort (2009-2014). We applied mixed models, adjusting for individual and maternal confounders using (1) varying-coefficient models allowing for smooth non-linear interaction between age and PM2.5, (2) factor-smooth interaction between age and PM2.5 quartiles. Additionally, we stratified by sex and low birthweight (LBW) status (≤2500 g). RESULTS Using varying-coefficient models, we found that PM2.5 significantly modified the association between age and weight in males, with a positive association in children younger than 3 years and a negative association afterwards. In boys, for each 10 µg/m3 increase in PM2.5 we found a 2.6% increase (95% confidence interval = 0.8, 4.6) in weight at 1 year of age and a -0.6% (95% confidence interval = -3.9, 2.9) at 5 years. We found similar but smaller changes in females, and no differences comparing growth trajectories across quartiles of PM2.5. Most of the effects were in LBW children and null for normal birthweight children. CONCLUSIONS This study suggests that medium-term postnatal PM2.5 may modify weight trajectories nonlinearly in young children, and that LBW babies are more susceptible than normal-weight infants.
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Affiliation(s)
- Jacopo Vanoli
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
- Department of Statistics and Quantitative Methods, Universita degli Studi di Milano-Bicocca, Milan, Italy
| | - Brent A. Coull
- Department of Biostatistics, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | | | - Patricia M. Fabian
- Department of Environmental Health, School of Public Health, Boston University, Boston, Massachusetts
| | - Fei Carnes
- Department of Environmental Health, School of Public Health, Boston University, Boston, Massachusetts
| | - Marisa A. Massaro
- Department of Environmental Health, School of Public Health, Boston University, Boston, Massachusetts
| | - Ana Poblacion
- Department of Pediatrics, School of Medicine, Boston University, Boston, Massachusetts
| | - Rino Bellocco
- Department of Statistics and Quantitative Methods, Universita degli Studi di Milano-Bicocca, Milan, Italy
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Joel Schwartz
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
- Department of Epidemiology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Francine Laden
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
- Department of Epidemiology, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Antonella Zanobetti
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
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Maher GM, Khashan AS, McCarthy FP. Obstetrical mode of delivery and behavioural outcomes in childhood and adolescence: findings from the Millennium Cohort Study. Soc Psychiatry Psychiatr Epidemiol 2022; 57:1697-1709. [PMID: 35032173 PMCID: PMC9288955 DOI: 10.1007/s00127-022-02233-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/06/2022] [Indexed: 12/20/2022]
Abstract
PURPOSE To examine the association between mode of delivery (in particular caesarean section) and behavioural outcomes in offspring at six time-points between age 3 and 17 years. METHODS Similar to previous work examining the association between mode of delivery and behavioural outcomes in offspring at age 7, we used maternal-reported data from the Millennium Cohort Study. Data on mode of delivery were collected when children were 9 months and categorised as spontaneous vaginal delivery, assisted vaginal delivery, induced vaginal delivery, emergency caesarean section, planned caesarean section and caesarean section after induction of labor. Data on behavioural outcomes were collected at ages 3, 5, 7, 11, 14 and 17 years using the Strengths and Difficulties Questionnaire (SDQ). Crude and adjusted logistic regression examined mode of delivery-behavioural difficulties relationship, using validated SDQ cut-off points (total SDQ ≥ 17, emotional ≥ 5, conduct ≥ 4, hyperactivity ≥ 7, peer problems ≥ 4 and prosocial behaviour ≤ 4). Multilevel models with linear splines examined the association between mode of delivery and repeated measures of SDQ. RESULTS There were 18,213 singleton mother-child pairs included at baseline, 13,600 at age 3; 13,831 at age 5; 12,687 at age 7; 11,055 at age 11; 10,745 at age 14 and 8839 at age 17. Adjusted logistic regression suggested few associations between mode of delivery and behavioural outcomes at ages 3, 5, 11, 14 and 17 years using validated SDQ cut-off points. After correction for multiple testing, only the protective association between planned caesarean section-Conduct difficulties at age 5 years (OR 0.63, 95% CI 0.46, 0.85) and positive association between caesarean section after induction-Emotional difficulties at age 11 years (OR 1.57, 95% CI 1.19, 2.07) remained statistically significant. Multilevel modelling suggested mean SDQ scores were similar in each mode of delivery group at each time point. CONCLUSIONS Results of this study indicate that mode of delivery is unlikely to have a major impact on behavioural outcomes.
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Affiliation(s)
- Gillian M Maher
- INFANT Research Centre, Cork, Ireland.
- School of Public Health, University College Cork, Cork, Ireland.
| | - Ali S Khashan
- INFANT Research Centre, Cork, Ireland
- School of Public Health, University College Cork, Cork, Ireland
| | - Fergus P McCarthy
- INFANT Research Centre, Cork, Ireland
- Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland
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Hughes RA, Tilling K, Lawlor DA. Combining Longitudinal Data From Different Cohorts to Examine the Life-Course Trajectory. Am J Epidemiol 2021; 190:2680-2689. [PMID: 34215868 PMCID: PMC8634562 DOI: 10.1093/aje/kwab190] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/24/2021] [Accepted: 06/25/2021] [Indexed: 12/17/2022] Open
Abstract
Longitudinal data are necessary to reveal changes within an individual as he or she ages. However, rarely will a single cohort study capture data throughout a person's entire life span. Here we describe in detail the steps needed to develop life-course trajectories from cohort studies that cover different and overlapping periods of life. Such independent studies are probably from heterogenous populations, which raises several challenges, including: 1) data harmonization (deriving new harmonized variables from differently measured variables by identifying common elements across all studies); 2) systematically missing data (variables not measured are missing for all participants in a cohort); and 3) model selection with differing age ranges and measurement schedules. We illustrate how to overcome these challenges using an example which examines the associations of parental education, sex, and race/ethnicity with children's weight trajectories. Data were obtained from 5 prospective cohort studies (carried out in Belarus and 4 regions of the United Kingdom) spanning data collected from birth to early adulthood during differing calendar periods (1936-1964, 1972-1979, 1990-2012, 1996-2016, and 2007-2015). Key strengths of our approach include modeling of trajectories over wide age ranges, sharing of information across studies, and direct comparison of the same parts of the life course in different geographical regions and time periods. We also introduce a novel approach of imputing individual-level covariates of a multilevel model with a nonlinear growth trajectory and interactions.
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Affiliation(s)
- Rachael A Hughes
- Correspondence to Dr. Rachael Hughes, MRC Integrative Epidemiology Unit, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, United Kingdom (e-mail: )
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Zheng M, Campbell KJ, Baur L, Rissel C, Wen LM. Infant feeding and growth trajectories in early childhood: the application and comparison of two longitudinal modelling approaches. Int J Obes (Lond) 2021; 45:2230-2237. [PMID: 34230577 DOI: 10.1038/s41366-021-00892-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 05/11/2021] [Accepted: 06/24/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND/OBJECTIVES The role of infant feeding practices in longitudinal growth trajectories in children remains equivocal. This study utilised two longitudinal approaches to examine the associations of infant feeding mode (breastfeeding, mixed feeding, formula feeding), breastfeeding duration, and the timing of solid foods introduction with body mass index (BMI) z-score in early childhood. SUBJECTS/METHODS Secondary analyses of data from the Healthy Beginnings Trial were conducted. Infant feeding practices were reported by mothers at 6, 12, and 24 months of child age. Child weight and length were measured at birth, 12, 24, 42, and 60 months. Two longitudinal approaches: linear spline multilevel model (LSMM) and group-based trajectory modelling (GBTM) were used to describe BMI z-score trajectories and assess its associations with infant feeding practices. RESULTS The LSMM approach demonstrated that the breastfeeding group showed lower BMI z-scores from ages 12 to 60 months than the mixed feeding and formula feeding groups. Children who were breastfed for ≥ 6 versus < 6 months exhibited a lower BMI z-score trajectory from ages 12 to 60 months. Results from the GBTM approach revealed that the mixed feeding (OR: 1.83, 95%CI 1.04, 3.21) and the formula feeding group (OR: 2.00, 95%CI 0.67, 5.92) showed a tendency for higher odds of following the "High BMIz" trajectory than the breastfeeding group. Breastfeeding duration ≥6 versus < 6 months was linked with lower odds of following the "High BMIz" trajectory (OR 0.65, 95%CI 0.43, 0.98). Both approaches revealed no evidence of an association between the timing of solid foods introduction and BMI z-score trajectory. CONCLUSIONS The two longitudinal approaches revealed similar findings that infant feeding mode and breastfeeding duration, but not the timing of solid foods introduction, were associated with BMI z-score trajectory in early childhood. The findings provide robust longitudinal evidence to encourage and support extended breastfeeding for childhood obesity prevention.
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Affiliation(s)
- Miaobing Zheng
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia.
| | - Karen J Campbell
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Louise Baur
- School of Public Health and Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Chris Rissel
- School of Public Health and Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Li Ming Wen
- School of Public Health and Sydney Medical School, The University of Sydney, Sydney, Australia.,Health Promotion Unit, Population Health Research and Evaluation Hub, Sydney Local Health District, NSW, Sydney, Australia
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Cadman T, Kwong ASF, Moran P, O’Mahen H, Culpin I, Lawlor DA, Pearson RM. Joint associations of parental personality traits and socio-economic position with trajectories of offspring depression: Findings from up to 6925 families in a UK birth cohort. JCPP ADVANCES 2021; 1:e12028. [PMID: 37431442 PMCID: PMC10242948 DOI: 10.1002/jcv2.12028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 06/28/2021] [Indexed: 11/08/2022] Open
Abstract
Background Parental personality may influence the course of offspring depression but epidemiological evidence for associations is lacking. It is also unknown whether associations between parental personality and offspring depression differ by socio-economic position (SEP). Our aims were to describe the trajectories of depressive symptoms across adolescence of offspring of parents with and without maladaptive personality traits and to test for effect modification by SEP. Methods A longitudinal study in the Avon Longitudinal Study of Parents and Children birth cohort (ns = 3054-7046). Exposures were binary measures of maladaptive maternal and paternal personality traits. The outcome was depressive symptoms measured over nine occasions (ages 11-24) using the short mood and feelings questionnaire (SMFQ; range: 0-26). Effect modifiers were parental education and self-reported material hardship. Multilevel growth curve models were used to estimate trajectories. Results offspring of mothers with high (vs. low) maladaptive traits showed higher levels of depressive symptoms at multiple ages of adolescence, the greatest of which was observed at age 22 (predicted SMFQ difference age 10 = 0.66, 95% confidence intervals [CIs]: 0.25 to 1.28; age 22 = 1.00, CI: 0.51 to 1.50). There was weaker and inconsistent evidence of an association between paternal maladaptive personality and offspring depressive symptoms (SMFQ difference age 10 = 0.21, CI: -0.58 to 0.99; age 22 = 0.02, CI: -0.94 to 0.90). Lower SEP was also associated with higher offspring depressive symptoms (SMFQ difference material hardship vs. no hardship age 10 = 0.79, 95% CI: 0.46 to 1.13; age 22 = 0.96, CI: 0.56 to 1.36). There was minimal statistical evidence for effect modification. Conclusions The offspring of mothers with high levels of maladaptive personality traits show evidence of greater depressive symptoms throughout adolescence although the absolute increase in symptoms is small. Evidence for the associations with fathers' personality was weaker. Socio-economic position and maladaptive personality traits appear to be independent risk factors for offspring depressive symptoms.
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Affiliation(s)
- Tim Cadman
- Integrative Epidemiology Unit (IEU)University of BristolBristolUK
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
| | - Alex S. F. Kwong
- Integrative Epidemiology Unit (IEU)University of BristolBristolUK
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
- Division of PsychiatryUniversity of EdinburghEdinburghUK
- Centre for Multilevel ModellingSchool of EducationUniversity of BristolBristolUK
| | - Paul Moran
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
- Population Health ScienceCentre for Academic Mental HealthBristol Medical SchoolUniversity of BristolBristolUK
- Bristol NIHR Biomedical Research CentreBristolUK
| | - Heather O’Mahen
- Department of PsychologyCollege of Life and Environmental SciencesUniversity of ExeterExeterUK
| | - Iryna Culpin
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
- Population Health ScienceCentre for Academic Mental HealthBristol Medical SchoolUniversity of BristolBristolUK
| | - Deborah A. Lawlor
- Integrative Epidemiology Unit (IEU)University of BristolBristolUK
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
- Bristol NIHR Biomedical Research CentreBristolUK
| | - Rebecca M. Pearson
- Integrative Epidemiology Unit (IEU)University of BristolBristolUK
- Population Health ScienceBristol Medical SchoolUniversity of BristolBristolUK
- Population Health ScienceCentre for Academic Mental HealthBristol Medical SchoolUniversity of BristolBristolUK
- Bristol NIHR Biomedical Research CentreBristolUK
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Khanolkar AR, Chaturvedi N, Kuan V, Davis D, Hughes A, Richards M, Bann D, Patalay P. Socioeconomic inequalities in prevalence and development of multimorbidity across adulthood: A longitudinal analysis of the MRC 1946 National Survey of Health and Development in the UK. PLoS Med 2021; 18:e1003775. [PMID: 34520470 PMCID: PMC8601600 DOI: 10.1371/journal.pmed.1003775] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/18/2021] [Accepted: 08/19/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND We aimed to estimate multimorbidity trajectories and quantify socioeconomic inequalities based on childhood and adulthood socioeconomic position (SEP) in the risks and rates of multimorbidity accumulation across adulthood. METHODS AND FINDINGS Participants from the UK 1946 National Survey of Health and Development (NSHD) birth cohort study who attended the age 36 years assessment in 1982 and any one of the follow-up assessments at ages 43, 53, 63, and 69 years (N = 3,723, 51% males). Information on 18 health conditions was based on a combination of self-report, biomarkers, health records, and prescribed medications. We estimated multimorbidity trajectories and delineated socioeconomic inequalities (based on childhood and adulthood social class and highest education) in multimorbidity at each age and in longitudinal trajectories. Multimorbidity increased with age (0.7 conditions at 36 years to 3.7 at 69 years). Multimorbidity accumulation was nonlinear, accelerating with age at the rate of 0.08 conditions/year (95% CI 0.07 to 0.09, p < 0.001) at 36 to 43 years to 0.19 conditions/year (95% CI 0.18 to 0.20, p < 0.001) at 63 to 69 years. At all ages, the most socioeconomically disadvantaged had 1.2 to 1.4 times greater number of conditions on average compared to the most advantaged. The most disadvantaged by each socioeconomic indicator experienced an additional 0.39 conditions (childhood social class), 0.83 (adult social class), and 1.08 conditions (adult education) at age 69 years, independent of all other socioeconomic indicators. Adverse adulthood SEP was associated with more rapid accumulation of multimorbidity, resulting in 0.49 excess conditions in partly/unskilled compared to professional/intermediate individuals between 63 and 69 years. Disadvantaged childhood social class, independently of adulthood SEP, was associated with accelerated multimorbidity trajectories from age 53 years onwards. Study limitations include that the NSHD cohort is composed of individuals of white European heritage only, and findings may not be generalizable to the non-white British population of the same generation and did not account for other important dimensions of SEP such as income and wealth. CONCLUSIONS In this study, we found that socioeconomically disadvantaged individuals have earlier onset and more rapid accumulation of multimorbidity resulting in widening inequalities into old age, with independent contributions from both childhood and adulthood SEP.
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Affiliation(s)
- Amal R. Khanolkar
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Nishi Chaturvedi
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
| | - Valerie Kuan
- Institute of Health Informatics, UCL, London, United Kingdom
- Institute of Cardiovascular Science, UCL, London, United Kingdom
| | - Daniel Davis
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
| | - Alun Hughes
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
| | - Marcus Richards
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
| | - David Bann
- Centre for Longitudinal Studies, UCL, London, United Kingdom
| | - Praveetha Patalay
- MRC Unit for Lifelong Health and Ageing at UCL, London, United Kingdom
- Centre for Longitudinal Studies, UCL, London, United Kingdom
- * E-mail:
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40
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Maher GM, McCarthy FP, Khashan AS. Hypertensive Disorders of Pregnancy and Behavioural Outcomes in the Offspring: Findings from the Millennium Cohort Study. J Affect Disord 2021; 287:222-228. [PMID: 33799041 DOI: 10.1016/j.jad.2021.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/10/2021] [Accepted: 03/15/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND The aim of this study was to examine the association between hypertensive disorders of pregnancy (HDP) and behavioural outcomes in offspring at five time-points. METHODS We used maternal-reported data from the Millennium Cohort Study. Data on HDP were collected when children were 9-months. Data on behavioural outcomes were collected at age 3, 5, 7, 11 and 14years using the Strengths and Difficulties Questionnaire (SDQ). Multivariate logistic regression analysis examined a HDP-behavioural difficulties relationship, using validated SDQ cut-off points. Multilevel models with linear splines examined the association between HDP and repeated measures of SDQ. RESULTS 18,274 singleton children were included in the study at baseline, Multivariate logistic regression suggested HDP was not significantly associated with SDQ domain cut-off points at ages 3, 7 and 11years. At age 5years, HDP was associated with a 40% increased odds of behavioural difficulties based on total SDQ(≥17) (OR:1.40, 95% CI:1.03,1.91). HDP was associated with a 43% increased odds of Peer Problem difficulties at age 5 (OR:1.43, 95% CI:1.10,1.86), and a 28% increased odds of Peer Problem difficulties(≥4) at age 14 (OR:1.28, 95% CI:1.02,1.61). In the linear spline model, mean SDQ score was higher at each time-point in those exposed to HDP, although did not always reach statistical significance. LIMITATIONS Data on different classifications of HDP were unavailable; therefore, we could not examine the effect of gestational hypertension and preeclampsia separately. CONCLUSIONS While we did not find strong evidence of associations between HDP and behavioural outcomes overall, some associations between HDP and behavioural difficulties did persist at age 5 and 14years.
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Affiliation(s)
- Gillian M Maher
- INFANT Research Centre, Cork, Ireland; School of Public Health, Western Gateway Building, University College Cork, Cork, Ireland.
| | - Fergus P McCarthy
- INFANT Research Centre, Cork, Ireland; Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland
| | - Ali S Khashan
- INFANT Research Centre, Cork, Ireland; School of Public Health, Western Gateway Building, University College Cork, Cork, Ireland
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41
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Parker RMA, Leckie G, Goldstein H, Howe LD, Heron J, Hughes AD, Phillippo DM, Tilling K. Joint Modeling of Individual Trajectories, Within-Individual Variability, and a Later Outcome: Systolic Blood Pressure Through Childhood and Left Ventricular Mass in Early Adulthood. Am J Epidemiol 2021; 190:652-662. [PMID: 33057618 PMCID: PMC8024053 DOI: 10.1093/aje/kwaa224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 10/09/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
Within-individual variability of repeatedly measured exposures might predict later outcomes (e.g., blood pressure (BP) variability (BPV) is an independent cardiovascular risk factor above and beyond mean BP). Because 2-stage methods, known to introduce bias, are typically used to investigate such associations, we introduce a joint modeling approach, examining associations of mean BP and BPV across childhood with left ventricular mass (indexed to height; LVMI) in early adulthood with data (collected 1990-2011) from the UK Avon Longitudinal Study of Parents and Children cohort. Using multilevel models, we allowed BPV to vary between individuals (a "random effect") as well as to depend on covariates (allowing for heteroskedasticity). We further distinguished within-clinic variability ("measurement error") from visit-to-visit BPV. BPV was predicted to be greater at older ages, at higher body weights, and in female participants and was positively correlated with mean BP. BPV had a weak positive association with LVMI (10% increase in within-individual BP variance was predicted to increase LVMI by 0.21%, 95% credible interval: -0.23, 0.69), but this association became negative (-0.78%, 95% credible interval: -2.54, 0.22) once the effect of mean BP on LVMI was adjusted for. This joint modeling approach offers a flexible method of relating repeatedly measured exposures to later outcomes.
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Affiliation(s)
- Richard M A Parker
- Correspondence to Dr. Richard M. A. Parker, MRC Integrative Epidemiology Unit, University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS8 2BN, UK (e-mail: )
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42
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He JR, Ramakrishnan R, Wei XL, Lu JH, Lu MS, Xiao WQ, Tu S, Liu X, Zhou FJ, Zhang LF, Xia HM, Qiu X. Fetal growth at different gestational periods and risk of impaired childhood growth, low childhood weight and obesity: a prospective birth cohort study. BJOG 2021; 128:1615-1624. [PMID: 33690938 DOI: 10.1111/1471-0528.16698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To examine the longitudinal associations of fetal growth with adverse child growth outcomes and to assess whether maternal metabolic factors modify the associations. DESIGN Prospective cohort study. SETTING Born in Guangzhou Cohort Study, China. POPULATION A total of 4818 mother-child pairs. METHODS Fetal growth was assessed according to estimated fetal weight (EFW) from 22 weeks of gestation until birth and the measurement of the birthweight. Fetal growth Z-scores were computed from random effects in the multilevel linear spline models to represent fetal size in early pregnancy (22 weeks of gestation) and growth in mid-pregnancy (22-27 weeks of gestation), early third trimester (28-36 weeks of gestation) and late third trimester (≥37 weeks of gestation). MAIN OUTCOME MEASURES Z-scores for childhood stunting, low weight, overweight or obesity, length/height for age (LAZ/HAZ), weight for age (WAZ) and body mass index for age (BMIZ) at the age of 3 years. Adjusted associations were examined using multiple Poisson or linear regression models. RESULTS Increased Z-scores of fetal size in early pregnancy and growth in mid-pregnancy and early third trimester were associated with a higher risk of childhood overweight or obesity (risk ratios 1.25-1.45). Fetal growth in each period was negatively associated with stunting and low weight, with the strongest associations observed for fetal size in early pregnancy and growth in mid-pregnancy. The results for continuous outcomes (LAZ/HAZ, WAZ and BMIZ) were similar. The associations of fetal growth with overweight or obesity in childhood were stronger among mothers who were underweight and who were overweight or obese than among mothers of normal weight. CONCLUSIONS Accelerated fetal growth before 37 weeks of gestation is associated with children who are overweight or obese, whereas the critical period for stunting and low weight occurs before 28 weeks of gestation. TWEETABLE ABSTRACT Fetal growth during different periods is differentially associated with childhood stunting, underweight and overweight or obesity.
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Affiliation(s)
- J-R He
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Nuffield Department of Women's & Reproductive Health, University of Oxford, Oxford, UK
| | - R Ramakrishnan
- Nuffield Department of Women's & Reproductive Health, University of Oxford, Oxford, UK.,University of New South Wales, Sydney, NSW, Australia
| | - X-L Wei
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - J-H Lu
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - M-S Lu
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - W-Q Xiao
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - S Tu
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - X Liu
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - F-J Zhou
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - L-F Zhang
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - H-M Xia
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Neonatal Surgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - X Qiu
- Division of Birth Cohort Study, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Woman and Child Health Care, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Obstetrics and Gynecology, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, China
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Roell KR, Harmon QE, Klungsøyr K, Bauer AE, Magnus P, Engel SM. Clustering Longitudinal Blood Pressure Trajectories to Examine Heterogeneity in Outcomes Among Preeclampsia Cases and Controls. Hypertension 2021; 77:2034-2044. [PMID: 33813841 DOI: 10.1161/hypertensionaha.120.16239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Kyle R Roell
- Department of Epidemiology (K.R.R., S.M.E.), University of North Carolina at Chapel Hill
| | - Quaker E Harmon
- Epidemiology Branch, National Institute of Environmental Health Sciences, Durham, NC (Q.E.H.)
| | - Kari Klungsøyr
- Department of Global Public Health and Primary Care, University of Bergen, Norway (K.K.).,Division for Mental and Physical Health, Norwegian Institute of Public Health, Bergen, Norway (K.K.)
| | - Anna E Bauer
- Perinatal Psychiatry Program, Department of Psychiatry (A.E.B.), University of North Carolina at Chapel Hill
| | - Per Magnus
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway (P.M.)
| | - Stephanie M Engel
- Department of Epidemiology (K.R.R., S.M.E.), University of North Carolina at Chapel Hill
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Hilaire M, Andrianou XD, Lenglet A, Ariti C, Charles K, Buitenhuis S, Van Brusselen D, Roggeveen H, Ledger E, Denat RS, Bryson L. Growth and neurodevelopment in low birth weight versus normal birth weight infants from birth to 24 months, born in an obstetric emergency hospital in Haiti, a prospective cohort study. BMC Pediatr 2021; 21:143. [PMID: 33761917 PMCID: PMC7988959 DOI: 10.1186/s12887-021-02605-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 03/10/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Low birthweight (LBW) infants are at higher risk of mortality and morbidity (growth, chronic disease and neurological problems) during their life. Due to the high incidence of (pre-) eclampsia in Haiti, LBW infants are common. We assessed the anthropometric growth (weight and length) and neurodevelopmental delay in LBW and normal birthweight (NBW) infants born at an obstetric emergency hospital in Port au Prince, Haiti, between 2014 and 2017. METHODS Infants were followed at discharge and 3, 6, 12, 15, 18, 21 and 24 months of corrected gestational age. At each visit they underwent a physical checkup (weight, length, physical abnormalities, identification of morbidities). At 6, 12, 18 and 24 months they underwent a neurodevelopmental assessment using the Bayley Scale III (motor, cognitive and communication skills). We modelled the trajectories between birth and 24 months of age of NBW compared to LBW infants for weight, length, and raw scores for Bayley III assessments using mixed linear models. RESULTS In total 500 LBW and 210 NBW infants were recruited of which 333 (46.7%) were followed up for 24 months (127 NBW; 60.5% and 206 LBW; 41.2%) and 150 died (LBW = 137 and NBW = 13). LBW and NBW babies gained a mean 15.8 g and 11.4 g per kg of weight from discharge per day respectively. The speed of weight gain decreased rapidly after 3 months in both groups. Both groups grow rapidly up to 6 months of age. LBW grew more than the NBW group during this period (22.8 cm vs. 21.1 cm). Both groups had WHZ scores <- 2 up to 15 months. At 24 months NBW babies scored significantly higher on the Bayley scales for gross motor, cognitive and receptive and expressive communication skills. There was no difference between the groups for fine motor skills. CONCLUSION LBW babies that survive neonatal care in urban Haiti and live up to 24 months of age, perform similar to their NBW for weight, length and fine motor skills. LBW babies are delayed in gross motor, cognitive and communication skills development. Further research on the clinical significance of these findings and long term implications of this neurodevelopmental delay is needed.
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Affiliation(s)
| | - Xanthi D Andrianou
- Médecins Sans Frontières, Plantage Middenlaan 14, 1018DD, Amsterdam, The Netherlands
| | - Annick Lenglet
- Médecins Sans Frontières, Plantage Middenlaan 14, 1018DD, Amsterdam, The Netherlands. .,Department of Medical Microbiology, Radboudumc, Nijmegen, Netherlands.
| | - Cono Ariti
- Centre for Trials Research, Cardiff University Medical School, Cardiff, UK
| | | | | | - Daan Van Brusselen
- Médecins Sans Frontières, Plantage Middenlaan 14, 1018DD, Amsterdam, The Netherlands
| | - Harriet Roggeveen
- Médecins Sans Frontières, Plantage Middenlaan 14, 1018DD, Amsterdam, The Netherlands
| | - Elizabeth Ledger
- Médecins Sans Frontières, Port au Prince, Haiti.,Medical Research Council Unit The Gambia at the London School of Hygiene & Tropical Medicine (LSHTM), London, UK
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45
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Monthé-Drèze C, Rifas-Shiman SL, Aris IM, Shivappa N, Hebert JR, Sen S, Oken E. Maternal diet in pregnancy is associated with differences in child body mass index trajectories from birth to adolescence. Am J Clin Nutr 2021; 113:895-904. [PMID: 33721014 PMCID: PMC8023853 DOI: 10.1093/ajcn/nqaa398] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/24/2020] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Nutrition in pregnancy and accelerated childhood growth are important predictors of obesity risk. Yet, it is unknown which dietary patterns in pregnancy are associated with accelerated growth and whether there are specific periods from birth to adolescence that are most sensitive to these associations. OBJECTIVES To examine the extent to which 3 dietary indices in pregnancy [Dietary Inflammatory Index (DII), Alternate Healthy Eating Index for Pregnancy (AHEI-P), and Mediterranean Diet Score (MDS)] are associated with child BMI z-score (BMI-z) trajectories from birth to adolescence. METHODS We examined 1459 mother-child dyads from Project Viva that had FFQ data in pregnancy and ≥3 child BMI-z measurements between birth and adolescence. We used linear spline mixed-effects models to examine whether BMI-z growth rates and BMI z-scores differed by quartile of each dietary index from birth to 1 mo, 1-6 mo, 6 mo to 3 y, 3-10 y, and >10 y. RESULTS The means ± SDs for DII (range, -9 to +8 units), AHEI-P (range, 0-90 points), and MDS (range, 0-9 points) were -2.6 ± 1.4 units, 61 ± 10 points, and 4.6 ± 2.0 points, respectively. In adjusted models, children of women in the highest (vs. lowest) DII quartile had higher BMI-z growth rates between 3-10 y (β, 0.03 SD units/y; 95% CI: 0.00-0.06) and higher BMI z-scores from 7 y through 10 y. Children of women with low adherence to a Mediterranean diet had higher BMI z-scores from 3 y through 15 y. Associations of AHEI-P with growth rates and BMI z-scores from birth through adolescence were null. CONCLUSIONS A higher DII and a lower MDS in pregnancy, but not AHEI-P results, are associated with higher BMI-z trajectories during distinct growth periods from birth through adolescence. Identifying the specific dietary patterns in pregnancy associated with rapid weight gain in children could inform strategies to reduce child obesity.
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Affiliation(s)
| | - Sheryl L Rifas-Shiman
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Izzuddin M Aris
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Nitin Shivappa
- South Carolina Statewide Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, SC, USA,Department of Nutrition, Connecting Health Innovations LLC, Columbia, SC, USA
| | - James R Hebert
- South Carolina Statewide Cancer Prevention and Control Program and Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, SC, USA,Department of Nutrition, Connecting Health Innovations LLC, Columbia, SC, USA
| | - Sarbattama Sen
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Emily Oken
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA
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Taylor CM, Golding J, Kordas K. Prenatal lead exposure: associations with growth and anthropometry in early childhood in a UK observational birth cohort study. Wellcome Open Res 2021. [DOI: 10.12688/wellcomeopenres.16338.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: Lead is a neurotoxic metal that crosses the placenta freely. It has adverse effects on a range of birth outcomes. The few studies reporting on the associations of prenatal exposure to lead and child growth have had conflicting results. This study aimed to examine the effect of prenatal exposure to lead on children’s growth from 4 to 61 months of age. Methods: Pregnant women were enrolled in the UK Avon Longitudinal Study of Parents and Children (ALSPAC). Whole blood samples for pregnancies with a live birth were analysed for lead (n=4140). A 10% subsample of the offspring cohort (Children in Focus) were invited to clinics at 10 time points (4–61 months) at which anthropometric measurements were carried out; z-scores for height, weight and BMI were calculated using the 1990 British Growth Reference Standards. Associations between prenatal log10-lead concentrations and z-scores and other anthropometric measures were modelled using adjusted linear regression models in an imputed dataset for children who attended at least one clinic (n=574). Results: The median prenatal blood lead concentration was 3.60 (IQR 2.61–4.16) µg/dl. There was no evidence for any associations of prenatal lead exposure with z-scores for BMI, height or weight in adjusted models from age 4 to 61 months. There were no associations for other anthropometric measures including mid-upper arm circumference, head circumference and waist circumference. There was some evidence for a weakly positive effect of prenatal lead exposure on head circumference in girls at age 43 and 61 months (at 61 months unstandardised B coefficient 1.59 (95% CI 0.12, 3.16) cm, p=0.048) but not at other ages. Conclusions: There was no consistent evidence of associations between prenatal exposure to lead and measures of growth and anthropometry from age 4 to 61 months in this cohort of children in the UK.
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Bolton KA, Kremer P, Laws R, Campbell KJ, Zheng M. Longitudinal analysis of growth trajectories in young children of Chinese-born immigrant mothers compared with Australian-born mothers living in Victoria, Australia. BMJ Open 2021; 11:e041148. [PMID: 33593772 PMCID: PMC7888327 DOI: 10.1136/bmjopen-2020-041148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Chinese immigrants are the third largest immigrant group in Australia. Little is known about growth trajectories of their offspring when moving to a Western country. The aim was to describe the growth trajectories between birth to 3.5 years in children of Chinese-born immigrant mothers compared with Australian-born mothers living in Victoria, Australia. METHODS Ten nurse measured weights and lengths from birth to 3.5 years were used to examine growth trajectory using linear spline multilevel models. Five knot points were identified at visit 2 (0.5 months), visit 4 (2 months), visit 5 (4.5 months), visit 8 (18 months) and visit 9 (25 months). RESULTS Ethnic disparities in growth trajectories between these two groups were revealed in models adjusted for birth weight, sex and level of socioeconomic disadvantage. Children of Chinese-born compared with Australian-born mothers revealed different growth rates and significant differences in predicted mean body mass index Z score (zBMI) at all time points from birth to 44 months, except for 12 months. Specifically, when compared with children of Australian-born mothers, children of Chinese-born mothers started with lower predicted zBMI from birth until 0.5 months, had a higher zBMI from 1 to 8 months and a lower zBMI from 12 to 44 months. Early and sharp acceleration of growth was also observed for children of Chinese-born mothers (0.5-2 months) when compared with children of Australian-born mothers (2-18 months). CONCLUSION Differences in growth trajectories exist between young children of Chinese-born and Australian-born mothers. Better understanding of these ethnically patterned growth trajectories is important for identifying key opportunities to promote healthy growth in early life.
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Affiliation(s)
- Kristy A Bolton
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Peter Kremer
- Centre for Sport Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Rachel Laws
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
- Centre of Research Excellence in the Early Prevention of Obesity in Childhood, University of Sydney, Sydney, New South Wales, Australia
| | - Karen J Campbell
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
- Centre of Research Excellence in the Early Prevention of Obesity in Childhood, University of Sydney, Sydney, New South Wales, Australia
| | - Miaobing Zheng
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
- Centre of Research Excellence in the Early Prevention of Obesity in Childhood, University of Sydney, Sydney, New South Wales, Australia
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Huang JS, Chen QZ, Zheng SY, Ramakrishnan R, Zeng JY, Zhuo CP, Lai YM, Kuang YS, Lu JH, He JR, Qiu X. Associations of Longitudinal Fetal Growth Patterns With Cardiometabolic Factors at Birth. Front Endocrinol (Lausanne) 2021; 12:771193. [PMID: 34956083 PMCID: PMC8696025 DOI: 10.3389/fendo.2021.771193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/16/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Birth weight is associated with cardiometabolic factors at birth. However, it is unclear when these associations occur in fetal life. We aimed to investigate the associations between fetal growth in different gestational periods and cord blood cardiometabolic factors. METHODS We included 1,458 newborns from the Born in Guangzhou Cohort Study, China. Z-scores of fetal size parameters [weight, abdominal circumference (AC), and femur length (FL)] at 22 weeks and growth at 22-27, 28-36, and ≥37 weeks were calculated from multilevel linear spline models. Multiple linear regression was used to examine the associations between fetal growth variables and z-scores of cord blood cardiometabolic factors. RESULTS Fetal weight at each period was positively associated with insulin levels, with stronger association at 28-36 weeks (β, 0.31; 95% CI, 0.23 to 0.39) and ≥37 weeks (β, 0.15; 95% CI, 0.10 to 0.20) compared with earlier gestational periods. Fetal weight at 28-36 (β, -0.32; 95% CI, -0.39 to -0.24) and ≥37 weeks (β, -0.26; 95% CI, -0.31 to -0.21) was negatively associated with triglyceride levels, whereas weight at 28-36 weeks was positively associated with HDL levels (β, 0.12; 95% CI, 0.04 to 0.20). Similar results were observed for AC. Fetal FL at 22 and 22-27 weeks was associated with increased levels of insulin, glucose, and HDL. CONCLUSIONS Fetal growth at different gestational periods was associated with cardiometabolic factors at birth, suggesting that an interplay between fetal growth and cardiometabolic factors might exist early in pregnancy.
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Affiliation(s)
- Jia-Shuan Huang
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Paediatrics School, Guangzhou Medical University, Guangzhou, China
| | - Qiao-Zhu Chen
- Department of Obstetrics and Gynecology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Si-Yu Zheng
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Paediatrics School, Guangzhou Medical University, Guangzhou, China
| | - Rema Ramakrishnan
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Ji-Yuan Zeng
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Paediatrics School, Guangzhou Medical University, Guangzhou, China
| | - Can-Peng Zhuo
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Paediatrics School, Guangzhou Medical University, Guangzhou, China
| | - Yu-Mian Lai
- Department of Obstetrics and Gynecology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Ya-Shu Kuang
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jin-Hua Lu
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Department of Women and Child Health Care and Provincial Key Clinical Specialty of Woman and Child Health, Guangzhou, China
| | - Jian-Rong He
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Department of Women and Child Health Care and Provincial Key Clinical Specialty of Woman and Child Health, Guangzhou, China
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
- *Correspondence: Xiu Qiu, ; Jian-Rong He,
| | - Xiu Qiu
- Division of Birth Cohort Study, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
- Department of Women and Child Health Care and Provincial Key Clinical Specialty of Woman and Child Health, Guangzhou, China
- *Correspondence: Xiu Qiu, ; Jian-Rong He,
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Crespi CM, Gao S, Payne A, Nobari TZ, Avila A, Nau C, Whaley SE, Wang MC. Longitudinal trajectories of adiposity-related measures from age 2-5 years in a population of low-income Hispanic children. Pediatr Res 2021; 89:1557-1564. [PMID: 32750702 PMCID: PMC8163600 DOI: 10.1038/s41390-020-1099-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 06/19/2020] [Accepted: 07/13/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND We estimated longitudinal trajectories of body mass index (BMI) z-score and percentile, weight for height (WFH) z-score and percentile, and percentage of the 95th BMI percentile (BMIp95) among low-income Hispanic children ages 2-5 years to provide normative data for this population and compare the behavior of different measures. METHODS Longitudinal height and weight measurements obtained from 18,072 Hispanic children aged 2-5 years enrolled in the Special Supplemental Nutrition Program for Women, Infants and Children in Los Angeles County were analyzed. Trajectories of adiposity-related measures were estimated using mixed models, stratified by sex and BMI percentile at age 2 years. RESULTS For children in the 5th-85th BMI percentile at age 2 years, all adiposity-related measures rose during ages 2-3.5 years; during ages 3.5-5 years, BMI-based measures increased, BMIp95 decreased, and WFH-based measures were stable. For children exceeding the 85th BMI percentile at age 2 years, measures generally trended downward during ages 2-5 years, except for BMIp95, which had variable trends. CONCLUSIONS Adiposity measures changed at different rates as children grew during ages 2-3.5 years compared to ages 3.5-5 years, and different measures displayed different trends. Studies should consider examining multiple measures and focusing on change relative to a comparison group. IMPACT To address the childhood obesity epidemic, information on normative trajectories of adiposity-related measures in at-risk populations of young children is needed. Longitudinal analysis of data collected from low-income Hispanic children during ages 2-5 years revealed different patterns for different adiposity measures and for ages 2-3.5 years versus 3.5-5 years. Child obesity studies should consider examining multiple adiposity measures and focus on change relative to a comparison group to avoid misinterpreting longitudinal patterns.
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Affiliation(s)
- Catherine M. Crespi
- grid.19006.3e0000 0000 9632 6718Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA USA
| | - Shuang Gao
- grid.240473.60000 0004 0543 9901Penn State College of Medicine, Hershey, PA USA
| | - Alexandra Payne
- grid.19006.3e0000 0000 9632 6718Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA USA
| | - Tabashir Z. Nobari
- grid.253559.d0000 0001 2292 8158Department of Public Health, California State University Fullerton, Fullerton, CA USA
| | - Analissa Avila
- grid.19006.3e0000 0000 9632 6718Department of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA USA
| | - Claudia Nau
- grid.280062.e0000 0000 9957 7758Kaiser Permanente Southern California, Pasadena, CA USA
| | | | - May C. Wang
- grid.19006.3e0000 0000 9632 6718Department of Community Health Sciences, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA USA
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50
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O’Keeffe LM, Frysz M, Bell JA, Howe LD, Fraser A. Puberty timing and adiposity change across childhood and adolescence: disentangling cause and consequence. Hum Reprod 2020; 35:2784-2792. [PMID: 33242326 PMCID: PMC7744159 DOI: 10.1093/humrep/deaa213] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 06/23/2020] [Indexed: 12/27/2022] Open
Abstract
STUDY QUESTION Is earlier puberty more likely a result of adiposity gain in childhood than a cause of adiposity gain in adulthood? SUMMARY ANSWER Pre-pubertal fat mass is associated with earlier puberty timing but puberty timing is not associated with post-pubertal fat mass change. WHAT IS KNOWN ALREADY Age at puberty onset has decreased substantially in the last several decades. Whether reducing childhood adiposity prevents earlier puberty and if early puberty prevention itself also has additional independent benefits for prevention of adult adiposity is not well understood. STUDY DESIGN, SIZE, DURATION Prospective birth cohort study of 4176 participants born in 1991/1992 with 18 232 repeated measures of fat mass from age 9 to 18 years. PARTICIPANTS/MATERIALS, SETTING, METHODS We used repeated measures of height from 5 to 20 years to identify puberty timing (age at peak height velocity, aPHV) and repeated measures of directly measured fat mass from age 9 to 18 years, from a contemporary UK birth cohort study to model fat mass trajectories by chronological age and by time before and after puberty onset. We then examined associations of these trajectories with puberty timing separately in females and males. MAIN RESULTS AND THE ROLE OF CHANCE In models by chronological age, a 1-year later aPHV was associated with 20.5% (95% confidence interval (CI): 18.6-22.4%) and 23.4% (95% (CI): 21.3-25.5%) lower fat mass in females and males, respectively, at 9 years. These differences were smaller at age 18 years: 7.8% (95% (CI): 5.9-9.6%) and 12.4% (95% (CI): 9.6-15.2%) lower fat mass in females and males per year later aPHV. Trajectories of fat mass by time before and after puberty provided strong evidence for an association of pre-pubertal fat mass with puberty timing, and little evidence of an association of puberty timing with post-pubertal fat mass change. The role of chance is likely to be small in this study given the large sample sizes available. LIMITATIONS, REASONS FOR CAUTION Participants included in our analyses were more socially advantaged than those excluded. The findings of this work may not apply to non-White populations and further work examining associations of puberty timing and fat mass in other ethnicities is required. WIDER IMPLICATIONS OF THE FINDINGS Previous research has relied on self-reported measures of puberty timing such as age of voice breaking in males, has lacked data on pre-and post-pubertal adiposity together and relied predominantly on indirect measures of adiposity such as BMI. This has led to conflicting results on the nature and direction of the association between puberty timing and adiposity in females and males. Our work provides important clarity on this, suggesting that prevention of adiposity in childhood is key for prevention of early puberty, adult adiposity and associated cardiovascular risk. In contrast, our findings suggest that prevention of early puberty without prevention of childhood adiposity would have little impact on prevention of adult adiposity. STUDY FUNDING/COMPETING INTEREST(S) The UK Medical Research Council and Wellcome (Grant ref: 102215/2/13/2) and the University of Bristol provide core support for Avon Longitudinal Study of Parents and Children (ALSPAC). L.M.O.K. is supported by a UK Medical Research Council Population Health Scientist fellowship (MR/M014509/1) and a Health Research Board (HRB) of Ireland Emerging Investigator Award (EIA-FA-2019-007 SCaRLeT). J.A.B. is supported by the Elizabeth Blackwell Institute for Health Research, University of Bristol and the Wellcome Trust Institutional Strategic Support Fund (204813/Z/16/Z). L.D.H. and A.F. are supported by Career Development Awards from the UK Medical Research Council (grants MR/M020894/1 and MR/M009351/1, respectively). All authors work in a unit that receives funds from the UK Medical Research Council (grant MC_UU_00011/3, MC_UU_00011/6). No competing interests to declare. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Linda M O’Keeffe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Population Health Sciences, Bristol Medical School, Bristol, UK
| | - Monika Frysz
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
| | - Joshua A Bell
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
| | - Laura D Howe
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
| | - Abigail Fraser
- School of Public Health, University College Cork, Cork, Ireland
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
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