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Huang CH, Wong LC, Chu YJ, Hsu CJ, Wang HP, Tsai WC, Lee WT. The sleep problems in individuals with Rett syndrome and their caregivers. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2024:13623613241254620. [PMID: 38853381 DOI: 10.1177/13623613241254620] [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: 06/11/2024]
Abstract
LAY ABSTRACT Sleep problems are common and impactful among individuals with Rett syndrome (RTT) and their caregivers. We examined the sleep patterns of 29 RTT patients and their primary caregivers using various assessment tools. The study found that a majority of the patients experienced sleep disturbances, with younger patients showing more sleep difficulties. Caregivers also reported poor sleep quality. The findings emphasize the need to address sleep problems in RTT management, as improving sleep quality can positively impact the well-being of individuals with RTT and their caregivers.
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Affiliation(s)
- Cheng-Hsien Huang
- Department of Pediatrics, Sleep Center, Yang-Ming Branch, Taipei City Hospital, Taipei, Taiwan
- University of Taipei, Taiwan
| | - Lee-Chin Wong
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Ju Chu
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Chia-Jui Hsu
- Department of Pediatrics, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Hsin-Pei Wang
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Pediatrics, National Taiwan University Hospital YunLin Branch, Yun-Lin, Taiwan
| | - Wen-Che Tsai
- Department of Psychiatry, National Taiwan University Hospital, Taipei, Taiwan
| | - Wang-Tso Lee
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Brain and Mind Sciences, National Taiwan University Children's Hospital, Taipei, Taiwan
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2
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Harskamp-van Ginkel MW, Imkamp NLE, van Houtum L, Vrijkotte TGM, Ben Haddi-Toutouh Y, Chinapaw MJM. Parental Discontent with Infant Sleep During the First Two Years of Life. Behav Sleep Med 2023; 21:727-740. [PMID: 36625550 DOI: 10.1080/15402002.2022.2156867] [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] [Indexed: 01/11/2023]
Abstract
BACKGROUND Problematic sleep in infants can have a high impact on families. We examined parental discontent with infant sleep in the first six months of life and parent-perceived problematic sleep during the second year of life. METHODS We used Sarphati Cohort data of 1471 children. During periodic youth health care visits in the first six months of life, professionals registered parental discontent with infant sleep. In the second year of life, parents filled out the Brief Infant Sleep Questionnaire (BISQ), from which we defined parent-perceived problematic sleep and BISQ-defined problematic sleep. We examined the association of parental discontent with infant sleep during the first six months with both BISQ-derived outcomes up to age two, using multivariable logistic regression analysis. RESULTS 26% of parents were discontented with infant sleep during the first six months of life. During the second year of life, 27% of the parents perceived their child's sleep as problematic, and 9% of the infants had BISQ-defined problematic sleep. Early parental discontent with infant sleep was associated with parent-perceived problematic sleep [adjusted OR 2.50 (95% CI 1.91-3.28)], and BISQ-defined problematic sleep [adjusted OR 1.88 (1.11-3.17)]. CONCLUSIONS Early registered parental discontent with infant sleep was a predictor of parent-perceived problematic sleep in early toddlerhood. Registering parental discontent during infancy might enable professionals to identify a group of infants at risk for later problematic sleep. We recommend screening and parental support for sleep difficulties in an early stage.
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Affiliation(s)
- Margreet W Harskamp-van Ginkel
- Amsterdam UMC, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicola L E Imkamp
- Amsterdam UMC, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, University of Amsterdam, Amsterdam, The Netherlands
| | - Lieke van Houtum
- Sarphati Amsterdam, Public Health Service (GGD), Amsterdam, The Netherlands
| | - Tanja G M Vrijkotte
- Amsterdam UMC, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Mai J M Chinapaw
- Amsterdam Public Health Research Institute, Department of Public and Occupational Health, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan The Netherlands
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González-Safont L, Rebagliato M, Arregi A, Carrasco P, Guxens M, Vegas O, Julvez J, Estarlich M. Sleep problems at ages 8-9 and ADHD symptoms at ages 10-11: evidence in three cohorts from INMA study. Eur J Pediatr 2023; 182:5211-5222. [PMID: 37721582 PMCID: PMC10640481 DOI: 10.1007/s00431-023-05145-3] [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: 05/15/2023] [Revised: 07/18/2023] [Accepted: 07/30/2023] [Indexed: 09/19/2023]
Abstract
Sleep problems and attention deficit hyperactivity disorder (ADHD) are interrelated during childhood and preadolescence. The objective of this work is assessing if sleep problems at ages 8-9 represent an alarm sign for presenting ADHD problems at ages 10-11 in three cohorts from INMA Study. Participants were 1244 children from Gipuzkoa, Sabadell, and Valencia cohorts. Sleep problems were assessed (ages 8-9) with the sleep items of the Child's Behaviour Checklist (CBCL), and ADHD problems were collected through the Conner's Parent Rating Scales-Revised: Short Form (CPRS-R:S) (age 10-11). Minimally and fully adjusted negative binomial models were fitted for each CPRS-R:S scale. Linearity of the relationship was assessed with generalized additive models (cubic smoothing splines with 2, 3, and 4 knots). For sensitivity analyses, children with previous symptoms, those born preterm and small for gestational age, and cases with extreme values, were excluded. Sleep problems presented IRR (95% CI) of 1.14 (1.10-1.19), 1.20 (1.14-1.26), 1.18 (1.11-1.25), and 1.18 (1.13-1.23) for opposition, inattention, hyperactivity, and ADHD scales, respectively. Fully adjusted models slightly decreased the IRR, but the association remained similar and significant. Sensitivity analyses showed similar results to fully adjusted models with only hyperactivity shown a slight decrease on significance (p = 0.051) when ADHD cases at age 9 were excluded. Conclusion: Sleep problems are an alarm sign for later neurodevelopment problems such as ADHD. Healthcare systems could take advantage implementing policies to pay special attention on the sleep habits and sleep hygiene. This could contribute to add evidence to public health programmes such as the Healthy Child Programme.
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Affiliation(s)
- Llúcia González-Safont
- Nursing and Chiropody Faculty of Valencia University, Nineteenth of Menéndez Pelayo St., 46010, Valencia, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Fifth of Monforte Lemos St., 28029, Madrid, Spain
- JRU in Epidemiology, Environment and Health FISABIO-UJI-UV, Valencia, Spain
| | - Marisa Rebagliato
- CIBER de Epidemiología y Salud Pública (CIBERESP), Fifth of Monforte Lemos St., 28029, Madrid, Spain
- JRU in Epidemiology, Environment and Health FISABIO-UJI-UV, Valencia, Spain
- Predepartamental Unit of Medicine of Universitat Jaume I, Faculty of Health Sciences of Jaume I University, Sos Baynat Av, 12071, Castelló, Spain
| | - Ane Arregi
- University of the Basque Country, UPV/EHU, 48940, Leioa, Spain
- Biodonostia Health Research Institute, Dr. Beguiristain Av, 20014, San Sebastian, Spain
| | - Paula Carrasco
- JRU in Epidemiology, Environment and Health FISABIO-UJI-UV, Valencia, Spain.
- Predepartamental Unit of Medicine of Universitat Jaume I, Faculty of Health Sciences of Jaume I University, Sos Baynat Av, 12071, Castelló, Spain.
| | - Mònica Guxens
- CIBER de Epidemiología y Salud Pública (CIBERESP), Fifth of Monforte Lemos St., 28029, Madrid, Spain
- ISGlobal, Barcelona, Biomedical Research Park (PRBB), Eighty-Eighth Doctor Aiguader Av, 08003, Barcelona, Spain
- Universitat Pompeu Fabra, Barcelona, Spain
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
| | - Oscar Vegas
- University of the Basque Country, UPV/EHU, 48940, Leioa, Spain
- Biodonostia Health Research Institute, Dr. Beguiristain Av, 20014, San Sebastian, Spain
| | - Jordi Julvez
- CIBER de Epidemiología y Salud Pública (CIBERESP), Fifth of Monforte Lemos St., 28029, Madrid, Spain
- ISGlobal, Barcelona, Biomedical Research Park (PRBB), Eighty-Eighth Doctor Aiguader Av, 08003, Barcelona, Spain
| | - Marisa Estarlich
- Nursing and Chiropody Faculty of Valencia University, Nineteenth of Menéndez Pelayo St., 46010, Valencia, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Fifth of Monforte Lemos St., 28029, Madrid, Spain
- JRU in Epidemiology, Environment and Health FISABIO-UJI-UV, Valencia, Spain
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Bijlsma A, Beunders VA, Dorrepaal DJ, Joosten KF, van Beijsterveldt IA, Dudink J, Reiss IK, Hokken-Koelega AC, Vermeulen MJ. Sleep and 24-hour rhythm characteristics in preschool children born very preterm and full term. J Clin Sleep Med 2023; 19:685-693. [PMID: 36661086 PMCID: PMC10071387 DOI: 10.5664/jcsm.10408] [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: 07/01/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 01/21/2023]
Abstract
STUDY OBJECTIVES Sleep impacts the quality of life and is associated with cardiometabolic and neurocognitive outcomes. Little is known about the sleep of preterm-born children at preschool age. We, therefore, studied sleep and 24-hour rhythms of preschool children born very preterm compared with full-term children. METHODS This was a prospective cohort study comparing sleep quality and quantity of children born very preterm (gestational age [GA] < 30 weeks) with full-term children at the (corrected) age of 3 years, using (1) 2 parent-reported questionnaires (Brief Infant Sleep Questionnaire and The Munich Chronotype Questionnaire) and (2) at least 3 days of triaxial wrist actigraphy combined with sleep diary. We performed regression analyses with adjustment for sex (corrected), age, and birth weight standard deviation (SD) score. RESULTS Ninety-seven very-preterm-born (median GA 27+5; interquartile range 26 + 3;29 + 0 weeks) and 92 full-term children (GA 39 + 3; 38 + 4;40 + 4 weeks) were included. Sleep problems and other reported sleep parameters were not different between groups. As measured with actigraphy, sleep and 24-hour rhythm were similar between groups, except for very-preterm born children waking up 21 minutes (4;38) minutes later than full-term children (adjusted P = .001). CONCLUSIONS Based on parent reports and actigraphy, very-preterm-born children sleep quite similar to full-term controls at the corrected age of 3 years. Reported sleep problems were not different between groups. Actigraphy data suggest that preterm-born children may wake up later than children born full term. Further studies are needed to explore how sleep relates to cardiometabolic and neurodevelopmental outcomes after preterm birth and whether early interventions are useful to optimize 24-hour rhythm and sleep. CITATION Bijlsma A, Beunders VAA, Dorrepaal DJ, et al. Sleep and 24-hour rhythm characteristics in preschool children born very preterm and full term. J Clin Sleep Med. 2023;19(4):685-693.
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Affiliation(s)
- Alja Bijlsma
- Division of Neonatology, Department of Pediatrics, Erasmus MC Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Victoria A.A. Beunders
- Division of Neonatology, Department of Pediatrics, Erasmus MC Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Demi J. Dorrepaal
- Subdivision of Endocrinology, Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Koen F.M. Joosten
- Department of Pediatrics, Intensive Care Unit, Erasmus MC Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Inge A.L.P. van Beijsterveldt
- Subdivision of Endocrinology, Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jeroen Dudink
- Department of Neonatology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
- Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Irwin K.M. Reiss
- Division of Neonatology, Department of Pediatrics, Erasmus MC Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Anita C.S. Hokken-Koelega
- Subdivision of Endocrinology, Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marijn J. Vermeulen
- Division of Neonatology, Department of Pediatrics, Erasmus MC Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Beunders VAA, Koopman-Verhoeff ME, Vermeulen MJ, Silva CCV, Jansen PW, Luik AI, Reiss IKM, Joosten KFM, Jaddoe VWV. Fetal and infant growth patterns, sleep, and 24-h activity rhythms: a population-based prospective cohort study in school-age children. J Sleep Res 2023:e13822. [PMID: 36707974 DOI: 10.1111/jsr.13822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/01/2022] [Accepted: 12/20/2022] [Indexed: 01/29/2023]
Abstract
The study objective was to explore associations of fetal and infant weight patterns and preterm birth with sleep and 24-h activity rhythm parameters at school-age. In our prospective population-based study, 1327 children were followed from birth to age 10-15 years. Fetal weight was estimated using ultrasound in the second and third trimester of pregnancy. Birth weight and gestational age were available from midwife registries. Infant weight was measured at 6, 12 and 24 months. Fetal and infant weight acceleration or deceleration were defined as a change of >0.67 standard deviation between the corresponding age intervals. At school-age, sleep duration, sleep efficiency, wake after sleep onset, social jetlag, inter-daily stability, and intra-daily variability were assessed using tri-axial wrist actigraphy for 9 consecutive nights. We observed that low birth weight (<2500 g) was associated with 0.24 standard deviation (95% confidence interval [CI] 0.04; 0.43) longer sleep duration compared to normal weight. Compared to normal growth, growth deceleration in fetal life and infancy was associated with 0.40 standard deviation (95% CI 0.07; 0.73) longer sleep duration, 0.44 standard deviation (95% CI 0.14; 0.73) higher sleep efficiency, and -0.41 standard deviation (95% CI -0.76; -0.07) shorter wake after sleep onset. A pattern of normal fetal growth followed by infant growth acceleration was associated with -0.40 standard deviation (95% CI -0.61; -0.19) lower inter-daily stability. Preterm birth was not associated with any sleep or 24-h rhythm parameters. Our findings showed that children with fetal and infant growth restriction had longer and more efficient sleep at school-age, which may be indicative of an increased need for sleep for maturational processes and development after a difficult start in life.
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Affiliation(s)
- Victoria A A Beunders
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.,The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - M Elisabeth Koopman-Verhoeff
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Institute of Education and Child Studies, Leiden University, Leiden, The Netherlands.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Marijn J Vermeulen
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Carolina C V Silva
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Pauline W Jansen
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Annemarie I Luik
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Irwin K M Reiss
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Koen F M Joosten
- Department of Pediatrics, Intensive Care Unit, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Lenehan SM, Fogarty L, O’Connor C, Mathieson S, Boylan GB. The Architecture of Early Childhood Sleep Over the First Two Years. Matern Child Health J 2023; 27:226-250. [PMID: 36586054 PMCID: PMC9925493 DOI: 10.1007/s10995-022-03545-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2022] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The architecture and function of sleep during infancy and early childhood has not been fully described in the scientific literature. The impact of early sleep disruption on cognitive and physical development is also under-studied. The aim of this review was to investigate early childhood sleep development over the first two years and its association with neurodevelopment. METHODS This review was conducted according to the 2009 PRISMA guidelines. Four databases (OVID Medline, Pubmed, CINAHL, and Web of Science) were searched according to predefined search terms. RESULTS Ninety-three studies with approximately 90,000 subjects from demographically diverse backgrounds were included in this review. Sleep is the predominant state at birth. There is an increase in NREM and a decrease in REM sleep during the first two years. Changes in sleep architecture occur in tandem with development. There are more studies exploring sleep and early infancy compared to mid and late infancy and early childhood. DISCUSSION Sleep is critical for memory, learning, and socio-emotional development. Future longitudinal studies in infants and young children should focus on sleep architecture at each month of life to establish the emergence of key characteristics, especially from 7-24 months of age, during periods of rapid neurodevelopmental progress.
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Affiliation(s)
| | - Leanna Fogarty
- INFANT Research Centre, University College Cork, Cork, Ireland
| | - Cathal O’Connor
- INFANT Research Centre, University College Cork, Cork, Ireland
| | - Sean Mathieson
- INFANT Research Centre, University College Cork, Cork, Ireland
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Prenatal exposure to trans fatty acids and head growth in fetal life and childhood: triangulating confounder-adjustment and instrumental variable approaches. Eur J Epidemiol 2022; 37:1171-1180. [DOI: 10.1007/s10654-022-00910-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 08/26/2022] [Indexed: 11/03/2022]
Abstract
AbstractDietary trans fatty acids (TFAs) are primarily industrially produced and remain abundant in processed food, particularly in low- and middle-income countries. Although TFAs are a cause of adverse cardiometabolic outcomes, little is known about exposure to TFAs in relation to brain development. We aimed to investigate the effect of maternal TFA concentration during pregnancy on offspring head growth in utero and during childhood. In a prospective population-based study in Rotterdam, the Netherlands, with 6900 mother–child dyads, maternal plasma TFA concentration was assessed using gas chromatography in mid-gestation. Offspring head circumference (HC) was measured in the second and third trimesters using ultrasonography; childhood brain morphology was assessed using magnetic resonance imaging at age 10 years. We performed regression analyses adjusting for sociodemographic and lifestyle confounders and instrumental variable (IV) analyses. Our IV analysis leveraged a national policy change that led to a substantial reduction in TFA and occurred mid-recruitment. After adjusting for covariates, maternal TFA concentration during pregnancy was inversely related to fetal HC in the third trimester (mean difference per 1% wt:wt increase: − 0.33, 95% CI − 0.51, − 0.15, cm) and to fetal HC growth from the second to the third trimester (− 0.04, 95% CI − 0.06, − 0.02, cm/week). Consistent findings were obtained with IV analyses, strengthening a causal interpretation. Association between prenatal TFA exposure and HC in the second trimester or global brain volume at age 10 years was inconclusive. Our findings are of important public health relevance as TFA levels in food remain high in many countries.
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Sleep and Executive Functioning in Pediatric Traumatic Brain Injury Survivors after Critical Care. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9050748. [PMID: 35626925 PMCID: PMC9139390 DOI: 10.3390/children9050748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/10/2022] [Accepted: 05/15/2022] [Indexed: 11/17/2022]
Abstract
Over 50,000 children are hospitalized annually for traumatic brain injury (TBI) and face long-term cognitive morbidity. Over 50% develop sleep/wake disturbances (SWDs) that can affect brain development and healing. We hypothesized SWDs would portend worse executive function outcomes in children aged 3−18 years with TBI 1−3 months after hospital discharge. SWDs were defined using the Sleep Disturbances Scale for Children (t-scores ≥ 60). Outcomes included the Global Executive Composite (GEC, t-score) from the Behavior Rating Inventory of Executive Function, Second and Preschool Editions, and multiple objective executive function assessments combined through Principal Components Analysis into a Neurocognitive Index (NCI, z-score). Multiple linear regression evaluated associations between SWDs and executive function outcomes, controlling for covariates. Among 131 children, 68% had clinically significant SWDs, which were associated with significantly worse median scores on the GEC (56 vs. 45) and NCI (−0.02 vs. 0.42; both p < 0.05). When controlling for baseline characteristics and injury severity in multivariable analyses, SWDs were associated with worse GEC (β-coefficient = 7.8; 95% Confidence Interval = 2.5, 13.1), and worse NCI (β-coefficient = −0.4; 95% Confidence Interval = −0.8, −0.04). SWDs in children with TBI are associated with worse executive function outcomes after hospital discharge, and may serve as modifiable targets to improve outcomes.
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9
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Zhang Z, Sousa-Sá E, Pereira JR, Okely AD, Feng X, Santos R. Correlates of Sleep Duration in Early Childhood: A Systematic Review. Behav Sleep Med 2021; 19:407-425. [PMID: 32496141 DOI: 10.1080/15402002.2020.1772264] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
OBJECTIVE This systematic review aimed to summarize correlates of sleep duration in children under 5 years of age. METHODS Six electronic databases (PubMed, PsycINFO, MEDLINE, CINAHL, SPORTDiscus, and Scopus) were searched from inception to May 2019. Observational studies and intervention studies reporting cross-sectional results from baseline data were considered. Data were extracted using a predesigned form and potential correlates were categorized following a sociological framework. RESULTS One-hundred and sixteen studies, representing 329,166 children, met the inclusion criteria, with a high risk of bias in 62 included studies. A total of 83 correlates of sleep duration were identified. Among the associations studied four or more times, correlates of nap duration were child's age and nighttime sleep onset/bedtime; correlates of nighttime sleep duration were household income, parent marital status, parental adiposity level, nighttime sleep duration at younger age, nighttime sleep onset/bedtime, nighttime sleep wakeup time, and frequency of current bedtime routine; correlate of total sleep duration was screen time. CONCLUSIONS Young children from low-income households, single families, or having overweight parents may be at risk for short sleep duration. Promoting healthy sleep duration from an early age appears essential. Effective practices may include encouraging an earlier bedtime, limiting screen time, and establishing a regular bedtime routine. The absence of consistent evidence in the psychological, cognitive, and emotional domain as well as the physical environmental domain warrants further research.
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Affiliation(s)
- Zhiguang Zhang
- Early Start, Faculty of Social Sciences, University of Wollongong, Australia
| | - Eduarda Sousa-Sá
- Early Start, Faculty of Social Sciences, University of Wollongong, Australia.,Illawarra Health and Medical Research Institute, Australia
| | - João R Pereira
- Early Start, Faculty of Social Sciences, University of Wollongong, Australia.,CIDAF (Uid/dtp/04213/2016), University of Coimbra, Coimbra, Portugal
| | - Anthony D Okely
- Early Start, Faculty of Social Sciences, University of Wollongong, Australia.,Illawarra Health and Medical Research Institute, Australia
| | - Xiaoqi Feng
- School of Public Health and Community Medicine, Faculty of Medicine, University of New South Wales, Australia.,Population Wellbeing and Environment Research Lab (PowerLab), School of Health and Society, Faculty of Social Sciences, University of Wollongong, Wollongong, Australia
| | - Rute Santos
- Early Start, Faculty of Social Sciences, University of Wollongong, Australia.,Research Centre in Physical Activity, Health and Leisure, University of Porto, Porto, Portugal.,Universidade Lusófona de Humanidades e Tecnologia, Lisboa, Portugal
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10
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Kocevska D, Tiemeier H, Lysen TS, de Groot M, Muetzel RL, Van Someren EJW, Ikram MA, Vernooij MW, Luik AI. The prospective association of objectively measured sleep and cerebral white matter microstructure in middle-aged and older persons. Sleep 2020; 42:5528118. [PMID: 31270542 DOI: 10.1093/sleep/zsz140] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 05/02/2019] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES Poor sleep may destabilize axonal integrity and deteriorate cerebral white matter. In middle-aged and older adults sleep problems increase alongside structural brain changes, but the temporal relation between these processes is poorly understood. We studied longitudinal associations between sleep and cerebral white matter microstructure. METHODS One thousand one persons (59.3 ± 7.9 years, 55% women) were followed across 5.8 years (3.9-10.8). Total sleep time (TST, hours), sleep efficiency (SE, percentage), sleep onset latency (SOL, minutes), and wake after sleep onset (WASO, minutes) were measured at baseline using a wrist-worn actigraph. White matter microstructure (global and tract-specific fractional anisotropy [FA] and mean diffusivity [MD]) was measured twice with diffusion tensor imaging (DTI). RESULTS Poor sleep was associated with worse white matter microstructure up to 7 years later but did not predict trajectories of DTI over time. Longer TST was associated with higher global FA (β = 0.06, 95% CI: 0.01 to 0.12), but not with MD. Persons with higher SE had higher global FA (β = 0.01, 95% CI: 0.002 to 0.01) and lower MD (β = -0.01, 95% CI: -0.01 to -0.0004). Consistently, those with more WASO had lower global FA (β = -0.003, 95% CI: -0.005 to -0.001) and higher MD (β = 0.002, 95% CI: 0.0004 to 0.004). Global findings seemed to be driven by microstructural alterations in the cingulum, anterior forceps of corpus callosum, projection and association tracts. CONCLUSIONS Middle-aged and older persons with more WASO, lower SE and shorter TST have worse microstructure of cerebral white matter. Microstructural alterations are most pronounced projection and association tracts, in the cingulum, and in the anterior forceps of corpus callosum.
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Affiliation(s)
- Desana Kocevska
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Sleep and Cognition, Netherlands Institute for Neuroscience (an Institute of the Royal Netherlands Academy of Arts and Sciences), Amsterdam, The Netherlands
| | - Henning Tiemeier
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Social and Behavioral Science, Harvard TH Chan School of Public Health, Boston, MA
| | - Thom S Lysen
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Marius de Groot
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Medical Informatics, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ryan L Muetzel
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Eus J W Van Someren
- Department of Sleep and Cognition, Netherlands Institute for Neuroscience (an Institute of the Royal Netherlands Academy of Arts and Sciences), Amsterdam, The Netherlands.,Department of Integrative Neurophysiology, Centre for Neurogenomics and Cognitive Research, VU University Medical Centre, Amsterdam, The Netherlands.,Department of Psychiatry, Centre for Neurogenomics and Cognitive Research, VU University Medical Centre, Amsterdam, The Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Neurology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Meike W Vernooij
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Annemarie I Luik
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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11
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Chiu YH, Rifas-Shiman SL, Kleinman K, Oken E, Young JG. Effects of intergenerational exposure interventions on adolescent outcomes: An application of inverse probability weighting to longitudinal pre-birth cohort data. Paediatr Perinat Epidemiol 2020; 34:366-375. [PMID: 32162715 PMCID: PMC7371449 DOI: 10.1111/ppe.12646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/29/2019] [Accepted: 12/16/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND There is great interest in understanding whether interventions on sugar-sweetened beverage (SSB) consumption through pregnancy and early childhood affect adolescent body mass index (BMI). Without data from randomised trials, unbiased estimation of such effects might be achieved with observational data given sufficient and appropriate adjustment for both baseline and time-varying confounders. OBJECTIVES To illustrate the use of inverse probability (IP) weighting of marginal structural models (MSM) for estimating the effects of SSB consumption through pregnancy and early childhood on the mean early adolescent BMI z-score. METHODS Our baseline sample consisted of 1584 pregnant women from a pre-birth cohort. We defined 6 intervention intervals: early pregnancy, late pregnancy, 3, 4, 5, and 6 years. We fitted a MSM via a weighted linear regression with IP exposure and censoring weights to estimate the mean difference in BMI z-score under interventions: "maintain SSB consumption below (vs above) 0.5 servings/day in all intervals." RESULTS The estimated difference in mean BMI z-score under interventions maintaining SSB consumption at or below (vs above) 0.5 servings/day from pregnancy to 6 years was -0.94 (95% confidence interval [CI] -1.52, -0.08). The effect estimate in pregnancy, while fixing the exposure range in childhood, was -0.05 (95% CI -0.34, 0.23), and in early childhood, while fixing the range in pregnancy was -0.89 (95% CI -1.46, -0.11). The effect estimates were largely unchanged under sensitivity analyses to different implementation choices except for the choice of time interval length. CONCLUSIONS Under assumptions that include no unmeasured confounding and selection bias, and no model misspecification, results of this IP weighting application are in line with a lower mean BMI z-score in early adolescence under interventions ensuring lower, vs greater, SSB consumption in early life. This application provides a resource for researchers working with longitudinal birth cohort studies and interested in similar causal questions.
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Affiliation(s)
- Yu-Han Chiu
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Sheryl L Rifas-Shiman
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston
| | - Ken Kleinman
- Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Jessica G. Young
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston
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12
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Harskamp-van Ginkel MW, Kool RE, van Houtum L, Belmon LS, Huss A, Chinapaw MJM, Vrijkotte TGM. Potential determinants during 'the first 1000 days of life' of sleep problems in school-aged children. Sleep Med 2020; 69:135-144. [PMID: 32078930 DOI: 10.1016/j.sleep.2019.12.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/12/2019] [Accepted: 12/23/2019] [Indexed: 11/26/2022]
Abstract
STUDY OBJECTIVES Early life determinants of sleep problems are mostly unknown. The first 1000 days of life (ie, the time between conception and a child's second birthday) is a period where the foundations for optimum health, growth and neurodevelopment are established. The aim of this explorative study is to identify potential early life determinants of sleep problems at age 7-8 years. METHODS Data from the Amsterdam Born Children and their Development cohort study (n = 2746) were analyzed. Sleep problems at age 7-8 years were reported by the caregiver in the 'Child Sleep Habits Questionnaire'. A higher total score indicates more sleep problems. After multiple imputation (n = 20), we studied multivariable associations between all potential determinants and sleep problems using regression analysis. RESULTS A higher pre-pregnancy body mass index (BMI) was associated with more sleep problems at age 7-8 years [β 0.12 (95% CI 0.05, 0.18)]. Children of mothers with symptoms of anxiety during pregnancy [β 0.06 (95% CI 0.03, 0.09)] and infancy period [β 0.04 (95% CI 0.00, 0.07)] had more sleep problems. Children of mothers drinking ≥1 glass of alcohol a day around 14 weeks of gestation had a 2 points higher sleep problem score [β 2.55 (95% CI 0.21, 4.89)] and children of mothers smoking ≥1 cigarette per day in that period had a one point higher score [β 1.07 (95% CI 0.10, 2.03)]. Infants with relative weight loss (delta BMI-SD) had a higher sleep problem score during childhood [β -0.32 (95%CI -0.60, -0.04)]. CONCLUSIONS We identified several potential determinants during pregnancy and infancy associated with childhood sleeping problems. We encourage further research into these and other potential determinants to replicate results and to identify underlying mechanisms.
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Affiliation(s)
- Margreet W Harskamp-van Ginkel
- Amsterdam UMC, University of Amsterdam, Department of Public Health, Amsterdam Public Health Research Institute, Meibergdreef 9, Amsterdam, Netherlands.
| | - Ruth E Kool
- Amsterdam UMC, University of Amsterdam, Department of Public Health, Amsterdam Public Health Research Institute, Meibergdreef 9, Amsterdam, Netherlands
| | - Lieke van Houtum
- Sarphati Amsterdam, Public Health Service (GGD), City of Amsterdam, Nieuwe Achtergracht 100, Amsterdam, the Netherlands
| | - Laura S Belmon
- Sarphati Amsterdam, Public Health Service (GGD), City of Amsterdam, Nieuwe Achtergracht 100, Amsterdam, the Netherlands; Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, De Boelelaan, 1117, Amsterdam, Netherlands
| | - Anke Huss
- University Utrecht, Institute for Risk Assessment Sciences, Yalelaan 2, Utrecht, Netherlands
| | - Mai J M Chinapaw
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, De Boelelaan, 1117, Amsterdam, Netherlands
| | - Tanja G M Vrijkotte
- Amsterdam UMC, University of Amsterdam, Department of Public Health, Amsterdam Public Health Research Institute, Meibergdreef 9, Amsterdam, Netherlands
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13
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Iglesias Vázquez L, Canals J, Voltas N, Jardí C, Hernández C, Bedmar C, Escribano J, Aranda N, Jiménez R, Barroso JM, Ribot B, Arija V. Does the fortified milk with high iron dose improve the neurodevelopment of healthy infants? Randomized controlled trial. BMC Pediatr 2019; 19:315. [PMID: 31488098 PMCID: PMC6727503 DOI: 10.1186/s12887-019-1679-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/20/2019] [Indexed: 01/01/2023] Open
Abstract
Background Since iron plays an important role in several physiological processes, its deficiency but also overload may harm the development of children. The aim was to assess the effect of iron–fortified milk on the iron biochemical status and the neurodevelopment of children at 12 months of age. Methods Randomized controlled trial conducted in 133 Spanish children, allocated in two groups to receive formula milk fortified with 1.2 or 0.4 mg/100 mL of iron between 6 and 12 months of age. Psychomotor (PDI) and Mental (MDI) Development Index were assessed by the Bayley Scales before and after the intervention. Maternal obstetrical and psychosocial variables were recorded. The biochemical iron status of children was measured and data about breastfeeding, anthropometry and infections during the first year of life were registered. Results Children fortified with 1.2 mg/100 mL of iron, compared with 0.4 mg/100 mL, showed higher serum ferritin (21.5 vs 19.1 μg/L) and lower percentage of both iron deficiency (1.1 to 5.9% vs 3.8 to 16.7%, respectively, from 6 to 12 months) and iron deficiency anemia (4.3 to 1.1% vs 0 to 4.2%, respectively, from 6 to 12 months) at the end of the intervention. No significant differences were found on neurodevelopment from 6 to 12 months between children who received high dose of Fe compared with those who received low dose. Conclusion Despite differences on the iron status were observed, there were no effects on neurodevelopment of well–nourished children in a developed country after iron supplementation with doses within dietary recommendations. Follow–up studies are needed to test for long–term neurodevelopmental improvement. Trial registration Retrospectively registered in ClinicalTrials.gov with the ID: NCT02690675.
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Affiliation(s)
- Lucía Iglesias Vázquez
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain
| | - Josefa Canals
- CRAMC (Centre de Recerca en Avaluació I Mesura de la Conducta), Unit of Psychology, Universitat Rovira i Virgili, Tarragona, Spain
| | - Núria Voltas
- CRAMC (Centre de Recerca en Avaluació I Mesura de la Conducta), Unit of Psychology, Universitat Rovira i Virgili, Tarragona, Spain
| | - Cristina Jardí
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain
| | - Carmen Hernández
- CRAMC (Centre de Recerca en Avaluació I Mesura de la Conducta), Unit of Psychology, Universitat Rovira i Virgili, Tarragona, Spain
| | - Cristina Bedmar
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain
| | - Joaquín Escribano
- Unit of Pediatrics, Faculty of Medicine and Health Science, Hospital Universitari Sant Joan de Reus, Universitat Rovira i Virgili, Reus, Spain.,IISPV (Institut d'Investigació Sanitària Pere Virgili), Reus, Spain
| | - Núria Aranda
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain.,IISPV (Institut d'Investigació Sanitària Pere Virgili), Reus, Spain
| | - Rosa Jiménez
- Unit of Pediatrics, Faculty of Medicine and Health Science, Hospital Universitari Sant Joan de Reus, Universitat Rovira i Virgili, Reus, Spain
| | - Josep Maria Barroso
- Unit of Pediatrics, Faculty of Medicine and Health Science, Hospital Universitari Sant Joan de Reus, Universitat Rovira i Virgili, Reus, Spain
| | - Blanca Ribot
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain
| | - Victoria Arija
- Unit of Preventive Medicine and Public Health, Faculty of Medicine and Health Science, Universitat Rovira i Virgili, Reus, Spain. .,IISPV (Institut d'Investigació Sanitària Pere Virgili), Reus, Spain. .,IDIAP (Institut Universitari d'Investigació en Atenció Primària) Jordi Gol, Barcelona, Spain.
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14
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Luijk MPCM, Kocevska D, Tham EKH, Gaudreau H, Reiss IKM, Duijts L, Cai S, Hillegers MHJ, Jaddoe VWV, Tiemeier H, Broekman BFP, El Marroun H. Gestational age at birth and sleep duration in early childhood in three population-based cohorts. Sleep Med X 2019; 1:100002. [PMID: 33870161 PMCID: PMC8041115 DOI: 10.1016/j.sleepx.2019.100002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/08/2019] [Accepted: 03/12/2019] [Indexed: 12/21/2022] Open
Abstract
Background Both preterm and post-term births have been associated with neonatal morbidity and mortality, including adverse impact on neurodevelopment. Important neural maturational processes take place during sleep in newborns, but findings on gestational duration and sleep in early childhood are contradictory and often derive from small clinical samples. We studied the association of gestational age at birth with sleep duration in early childhood in three population-based cohorts. Methods Gestational age at birth and sleep duration were assessed in three population-based cohort studies in The Netherlands (n = 6471), Singapore (n = 862), and Canada (n = 583). Gestational age at birth was assessed using ultrasound in pregnancy in combination with date of birth, and caregivers repeatedly reported on child sleep duration at three, six, 24, and 36 months of age. Generalized estimating equations were used, which were adjusted for confounders, and findings were pooled in a meta-analysis. Results Children born preterm (<37 weeks of gestation) showed longer sleep duration than children born at term; and children born post-term (≥42 weeks of gestation) showed shorter sleep duration. The meta-analysis indicated a small negative effect of gestational age on child sleep duration (effect size −0.11), when assessed in children born at term only. Conclusion In early childhood, children with a lower gestational age have a longer sleep duration, even when they are born at term (37–42 weeks of gestation). These subtle yet consistent findings point to the importance of maturational processes during sleep, not only in premature children but also in children born at term after shorter gestational duration. Children born after shorter gestational duration sleep longer than their term born peers. Lower gestational age is linked to longer sleep duration in three cohorts, even in term born children (37-42 weeks gestation). The association between gestational age and sleep duration is most prominent in the first year of life. Our subtle yet consistent findings point to the importance of maturational processes during sleep. Maturational processes underlying the interplay between gestational age and sleep duration should be investigated.
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Affiliation(s)
- Maartje P C M Luijk
- Department of Psychology, Education & Child Studies, Erasmus University Rotterdam, the Netherlands.,Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands
| | - Desana Kocevska
- Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands.,Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Elaine K H Tham
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research (ASTAR), Singapore
| | - Hélène Gaudreau
- Douglas Mental Health University Institute, McGill University, Montréal, Québec, Canada
| | - Irwin K M Reiss
- Department of Pediatrics, Erasmus University Medical Centre, Sophia, Rotterdam, the Netherlands
| | - Liesbeth Duijts
- Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands.,Division of Neonatology, Department of Pediatrics, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands
| | - Shirong Cai
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research (ASTAR), Singapore.,Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Manon H J Hillegers
- Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands
| | - Vincent W V Jaddoe
- Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, the Netherlands.,Department of Pediatrics, Erasmus University Medical Centre, Sophia, Rotterdam, the Netherlands.,The Generation R Study Group, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands.,Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Birit F P Broekman
- Singapore Institute for Clinical Sciences, Agency for Science and Technology Research (ASTAR), Singapore.,Department of Psychiatry, VU University, VU Medical Centre, Amsterdam, the Netherlands
| | - Hanan El Marroun
- Department of Psychology, Education & Child Studies, Erasmus University Rotterdam, the Netherlands.,Department of Child and Adolescent Psychiatry, Erasmus University Medical Centre - Sophia, Rotterdam, the Netherlands.,Department of Pediatrics, Erasmus University Medical Centre, Sophia, Rotterdam, the Netherlands
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