Maternal birthplace and breastfeeding initiation among term and preterm infants: a statewide assessment for Massachusetts

Multivariate Analysis of Factors Associated with Feeding Mother's Own Milk at Discharge in Preterm Infants: A Retrospective Cohort Study

OBJECTIVE

 This study aimed to develop a predictive model of feeding mother's own milk (MOM) at discharge using social determinants of health (SDOH), maternal and neonatal factors after deliveries at <33 weeks of gestational age (GA), or birth weight <1,500 g.

STUDY DESIGN

 Secondary analysis of a retrospective cohort in an inner-city hospital before (Epoch-1, 2018-2019) and after (Epoch-2, 2020-2021) implementing a donor human milk (DHM) program.

RESULTS

 Among 986 neonates, 495 were born in Epoch-1 (320 Hispanic White, 142 Non-Hispanic Black, and 33 Other) and 491 in Epoch-2 (327, 137, and 27, respectively). Feeding any MOM was less frequent in infants of non-Hispanic Black mothers than in those of Hispanic mothers (p < 0.05) but did not change with epoch (p = 0.46). Among infants who received any MOM, continued feeding MOM to the time of discharge was less frequent in infants of non-Hispanic Black mothers versus those of Hispanic mothers, 94/237 (40%) versus 339/595 (57%; p < 0.05), respectively. In multivariate analysis including SDOH and maternal variables, the odds of feeding MOM at discharge were lower with SDOH including neighborhoods with higher poverty levels, multiparity, substance use disorder, non-Hispanic Black versus Hispanic and young maternal age and increased with GA but did not change after implementing DHM. The predictive model including SDOH, maternal and early neonatal variables had good discrimination (area under the curve 0.85) and calibration and was internally validated. It showed the odds of feeding MOM at discharge were lower in infants of non-Hispanic Black mothers and with feeding DHM, higher need for respiratory support and later initiation of feeding MOM.

CONCLUSION

 Feeding MOM at discharge was associated with SDOH, and maternal and neonatal factors but did not change after implementing DHM. Disparity in feeding MOM at discharge was explained by less frequent initiation and shorter duration of feeding MOM but not by later initiation of feeding MOM.

KEY POINTS

· In this cohort study of preterm infants, factors of feeding MOM at discharge included (1) SDOH; (2) postnatal age at initiation of feeding MOM; and (3) maternal and neonatal factors.. · Feeding MOM at the time of discharge was less frequent in infants of non-Hispanic Black mothers versus those of Hispanic mothers.. · Disparity in feeding MOM at discharge was explained by less frequent initiation and shorter duration of MOM feeding but not by later postnatal age at initiation of feeding MOM..

Health disparities in preterm births

Introduction

Black African American (B/AA) women have a 2-fold to 3-fold elevated risk compared with non-Hispanic White (W) women for preterm birth. Further, preterm birth is the leading cause of mortality among B/AA infants, and among survivors, preterm infant adverse health outcomes occur disproportionately in B/AA infants. Racial inequities in maternal and infant health continue to pose a public health crisis despite the discovery >100 years ago. The purpose of this study was to expand on reported preterm infant outcome disparities. A life-course approach, accumulation of lifelong stress, including discrimination, may explain social factors causing preterm birth rate and outcome inequities in B/AA mothers.

Methods

Anthropometric measures and clinical treatment information for 197 consented participants were milled from electronic health records across 4 years. The Neonatal Infant Stressor Scale was used to tally acute and chronic painful/stressful procedures. Neurobehavioral differences were investigated using the Neonatal Intensive Care Unit (NICU) Network Neurobehavioral Scale.

Results

B/AA mothers gave birth to preterm infants earlier than W mothers. NICU hospitalization stays were extended more than 2 weeks for the significantly smaller B/AA preterm infants in comparison to the age-matched W preterm infants. A higher number of chronic lifesaving procedures with demonstrated altered stress response patterns were recorded for B/AA preterm infants.

Discussion

This cross-sectional analysis of preterm birth rates and preterm infant developmental and neurodevelopmental outcomes are presented in the context of NICU stress and pain, with attendant implications for infant mortality and future health disparities. Preterm birth rate and outcome inequities further support the need to develop interventions and policies that will reduce the impact of discrimination and improve social determinants of health for Black, Indigenous, and other People of Color.

Early-Life Nutrition in Preterm Infants and Risk of Respiratory Infections and Wheezing: A Scoping Review

INTRODUCTION

Preterm birth is a common early-life event that can lead to long-term consequences. The incidence of wheezing, asthma, and respiratory tract infections is higher in children born prematurely than in the general population. The purpose of this review was to synthesize the existing literature on the role of early-life nutrition in the later risk of respiratory morbidities.

METHODS

A scoping review of the literature was performed by searching three online databases. Inclusion criteria were: infants born <37 GWk, comparing human milk versus any other type of milk feeding formulation. Our primary outcomes were wheezing or asthma or respiratory tract infections after discharge. Two authors independently screened the results and extracted study characteristics using a predefined charting form.

RESULTS

Nine articles were included (eight cohort studies and one randomized trial). Four studies supported the protective effect of breastfeeding on wheezing or respiratory infections or both. Four studies did not confirm this association. One study confirmed the protective role of breastfeeding only on the subgroup of girls. There was a high heterogeneity among the included studies, in the type of milk feeding, outcomes, and age at follow-up.

CONCLUSIONS

The current evidence is conflicting. The high heterogeneity and methodological flaws could have influenced the results of the studies. Carefully designed studies are required to define the role of early-life nutrition among preterm infants on their long-term respiratory outcomes.

Factors associated with delayed initiation and non-exclusive breastfeeding among children in India: evidence from national family health survey 2019-21

BACKGROUND

In India, more than half of the newborns experience delayed breastfeeding, and non-exclusive breastfeeding is practiced in 63% of babies below the age of six months. The goal of this study is to investigate the extent to which external environment, demographic and socioeconomic, pregnancy and birthing characteristics, as well as utilization of maternal care services, are associated with delayed initiation and non-exclusive breastfeeding among children in India.

METHODS

Data was gathered from the fifth round of the National Family Health Survey (NFHS), which was conducted in 2019-21. This study used information on 85,037 singleton infants aged 0-23 months and 22,750 singleton infants aged 0-5 months. Delayed initiation of breastfeeding and non-exclusive breastfeeding was used as outcome variables in this study. Unadjusted and adjusted multivariable binary logistic regression was performed to analyse the association of delayed breastfeeding and non-exclusive breastfeeding with selected background characteristics.

RESULTS

Factors significantly associated with increased risks of delayed initiation of breastfeeding included infants from in the central region (OR 2.19; 95% CI 2.09, 2.29), mothers in the 20 to 29 years age group at the time of childbirth (OR 1.02; 95% CI 0.98, 1.05), caesarean deliveries (OR 1.97; 95% CI 1.90, 2.05). The likelihoods for non-exclusive breastfeeding significantly increased among children belonging to the richest household status (OR 1.30; 95% CI 1.17, 1.45), mothers who had less than nine months of pregnancy period (OR 1.15; 95% CI 1.06, 1.25), and mothers who gave birth in non-health facility (OR 1.17; 95% CI 1.05, 1.31).

CONCLUSIONS

The connections between several different categories of factors and non-exclusive breastfeeding and delayed breastfeeding initiation show the need for comprehensive public health programmes using a multi-sectoral approach to promote breastfeeding behaviours in India.

Evaluating Care in Safety Net Hospitals: Clinical Outcomes and Neonatal Intensive Care Unit Quality of Care in California

OBJECTIVES

To examine the characteristics of safety net (sn) and non-sn neonatal intensive care units (NICUs) in California and evaluate whether the site of care is associated with clinical outcomes.

STUDY DESIGN

This population-based retrospective cohort study of 34 snNICUs and 104 non-snNICUs included 22 081 infants born between 2014 and 2018 with a birth weight of 401-1500 g or gestational age of 22-29 weeks. Quality of care as measured by the Baby-MONITOR score and rates of survival without major morbidity were compared between snNICUs and non-snNICUs.

RESULTS

Black and Hispanic infants were cared for disproportionately in snNICUs, where care and outcomes varied widely. We found no significant differences in Baby-Measure Of Neonatal InTensive care Outcomes Research (MONITOR) scores (z-score [SD]: snNICUs, -0.31 [1.3]; non-snNICUs, 0.03 [1.1]; P = .1). Among individual components, infants in snNICUs exhibited lower rates of human milk nutrition at discharge (-0.64 [1.0] vs 0.27 [0.9]), lower rates of no health care-associated infection (-0.27 [1.1] vs 0.14 [0.9]), and higher rates of no hypothermia on admission (0.39 [0.7] vs -0.25 [1.1]). We found small but significant differences in survival without major morbidity (adjusted rate, 65.9% [95% CI, 63.9%-67.9%] for snNICUs vs 68.3% [95% CI, 67.0%-69.6%] for non-snNICUs; P = .02) and in some of its components; snNICUs had higher rates of necrotizing enterocolitis (3.8% [3.4%-4.3%] vs 3.1% [95% CI, 2.8%-3.4%]) and mortality (95% CI, 7.1% [6.5%-7.7%] vs 6.6% [6.2%-7.0%]).

CONCLUSIONS

snNICUs achieved similar performance as non-snNICUs in quality of care except for small but significant differences in any human milk at discharge, infection, hypothermia, necrotizing enterocolitis, and mortality.

Physical Activity and Its Relationship with Preterm Birth in the Presence of Depressive Symptomology

OBJECTIVE

To examine the relationship between physical activity (PA) and preterm birth (PTB) within the context of depressive symptoms (DS).

METHODS

Data are from the Life-course Influences of Fetal Environments (LIFE) Study, a cohort comprised of 1410 Black women, age 18-45 years who delivered a singleton in Metropolitan Detroit, MI. DS were measured with the Center for Epidemiologic Studies Depression Scale (CES-D); a score > 23 indicates severe DS. Traditional leisure time PA (LTPA) and non-LTPA during pregnancy (walking for a purpose, climbing stairs) were both measured. Modified Poisson regression models were used to estimate the association between PTB and PA. Effect modification by severe DS was assessed via stratification.

RESULTS

Approximately 16% of women had a PTB; 20% had CES-D scores > 23. Walking for a purpose was the most frequently reported type of PA (79%), followed by any LTPA (37.7%) and climbing stairs (13.5%). Compared with women who reported no PA, women who reported walking for a purpose (PR = 0.70, 95% CI 0.61, 1.10), partaking in LTPA (PR = 0.67, 95% CI 0.50, 0.90), or climbing stairs (PR = 0.61, 95% CI 0.45, 0.81) were less likely to have PTB. Results stratified by severe DS show the association between LTPA and PTB was more pronounced in women with severe DS, while the non-LTPA relationship with PTB was more heterogeneous.

CONCLUSIONS

Women who participated in traditional LTPA (any or walking only) and non-LTPA experienced improved birth outcomes. LTPA may buffer against PTB among pregnant Black women with severe DS as well as none or mild DS.

A Positive Impact of an Observational Study on Breastfeeding Rates in Two Neonatal Intensive Care Units

We aimed to investigate whether the participation in an observational study on breastfeeding (Doal) modified breastfeeding outcomes in enrolling neonatal intensive care units (NICUs). This bi-centric before-and-after study included neonates who were admitted during a 4-month period before and a 4-month period after the implementation of Doal. Breastfeeding intention and breastfeeding rates at discharge were compared between the two periods. The association between inclusion in Doal and breastfeeding at discharge was assessed among the infants fulfilling the inclusion criteria of Doal. The present study included 655 neonates. After adjustments, both breastfeeding (aOR 1.21, 95%CI [1.1; 1.4], p = 0.001) and exclusive breastfeeding (aOR 1.8, 95%CI [1.4; 2.3], p < 0.001) at discharge increased in the period after. Breastfeeding intention was higher in one center in the period after (79%) compared to before (59%, p = 0.019). Compared to the period before, neonates who were not included in Doal in the period after had a lower chance to be breastfed at discharge, whereas those included were more frequently exclusively breastfed. The participation in an observational study on breastfeeding was associated with an increase in breastfeeding outcomes in enrolling neonatal intensive care units (NICUs). Patients who are not included deserve attention as they are at risk to be disadvantaged regarding breastfeeding success.

Factors related to inhibition of lactation by pharmacological means at birth in a Spanish referral hospital (2011-2017)

OBJECTIVE

To describe the maternal, neonatal and pregnancy characteristics related to inhibition of lactation (IL) with cabergoline.

METHOD

We assessed 20,965 occasions of breastfeeding initiation, according to data collected from obstetric records at the Hospital Clinic of Barcelona (Spain) between January 2011 and December 2017.

RESULTS

IL decreased over the study period from 8.78% to 6.18% (odds ratio [OR]: 0.93 per year; 95% confidence interval [95%CI]: 0.90-0.95). Women with a lower educational level (OR: 2.5; 95%CI: 2.0-3.0), mothers living in more depressed areas (OR: 1.08 per 10 extra points over 100; 95%CI: 1.04-1.12), smokers (OR: 2.2; 95%CI: 1.9-2.6), and those with more children (OR: 1.2 for each sibling; 95%CI: 1.1-1.3), preterm birth (OR: 1.8; 95%CI: 1.4-2.3), multiple births (OR: 1.6; 95%CI: 1.2-2.1) and a higher risk pregnancy (OR: 1.3 per risk point; 95%CI: 1.2-1.4) showed a higher prevalence of IL. Compared to women born in Spain, IL was less likely in all other women with the exception of Chinese women (OR: 7.0; 95%CI: 5.7-8.6). These disparities remained during the study period.

CONCLUSIONS

Factors related to lower socioeconomic status and poor health were more likely to be associated with IL. The overall use of cabergoline decreased during the study period while inequalities persisted. Taking these inequalities into account is the first step to addressing them.

Respiratory Failure and Death in Vulnerable Premature Children With Lower Respiratory Tract Illness

Background

Efforts to better understand the risk factors associated with respiratory failure (RF) and fatal lower respiratory tract infection (LRTI) in premature children in developing countries are necessary to elaborate evidenced-based preventive interventions. We aim to characterize the burden of respiratory syncytial virus (RSV) and human metapneumovirus (hMPV) LRTI in premature children and determine risk factors for RF and fatal illness in a vulnerable population.

Methods

This is a prospective, population-based, cross-sectional study. Subjects with severe LRTI were enrolled during respiratory season. Risk factors for RF and death in premature infants were investigated.

Results

A total of 664 premature children participated. Infant’s hospitalization rate due to LRTI was 82.6/1000 (95% confidence interval [CI], 68.6–96.7/1000). Infant’s RSV and hMPV rates were 40.9/1000 (95% CI, 36.3–45.6/1000) and 6.6/1000 (95% CI, 3.9–9.2/1000), respectively. The RF rate was 8.2/1000 (95% CI, 4.9–11.5/1000). The LRTI mortality was 2.2/1000 (95% CI, 0.7–3.7/1000); for RSV, the rate was 0.8/1000 (95% CI, 0–1.7/1000) with a case-fatality ratio of 1.8%. Never breastfeeding, malnutrition, younger than 6 months, congenital heart disease, and lower hematocrit were risk factors for RF. Experiencing pneumonia, pneumothorax, sepsis, or apnea were clinical determinants of poor outcomes.

Conclusions

Premature children under 2 years old in vulnerable environments experience RF and death more often than term counterparts. Modifiable risk factors associated with poor outcomes should prompt evidence-based interventions.

The Acceptability, Feasibility, and Effectiveness of Breast Massage Combined with Acupoint Stimulation to Promote the Volume of Human Milk in Mothers with Preterm Infants: A Pilot Study

Background. Preterm infant mothers have always encountered difficulties in human milk production. For this reason, an intervention of breast massage combined with acupoint stimulation was designed to increase the production. Purpose. Through a pilot randomized trial, we assessed the acceptability, feasibility, and effectiveness of breast massage combined with acupoint stimulation and the study procedures. Methods. 40 participants of preterm infants born at less than 34 weeks of gestation were randomly allocated to the CG (control group) or the EG (group with breast massage combined with acupoint stimulation). Data related to the acceptability, feasibility, and effectiveness of the intervention and research procedures were collected and analysed. Results. The daily volume progressively increased each day in the first 7 days in both groups and a significant difference was observed between the groups ( $P$  < 0.001). The initiation time of lactogenesis stage II was 50.06 ± 6.78 (40.00–64.00) hours in the EG and 66.18 ± 14.64 (48.00–96.00) hours in the CG, where a significant difference was detected ( $P$  < 0.05). The mean score of satisfaction with the intervention in the EG was 4.56 ± 0.32 (4.0–5.0), while the retention rates were 82.5% and 85.5% (17/20) in the CG, and 80% (16/20) in the EG. Conclusion. This pilot study was oriented towards the effectiveness of breast massage combined with acupuncture stimulation for the increase of human milk production in the participants. The intervention was accepted well and the study process was reasonable. A large-scale RCT will be able to determine the beneficial effects of this intervention on human milk production.

Association between Neonatal Intensive Care Unit Admission and Supine Sleep Positioning, Breastfeeding, and Postnatal Smoking among Mothers of Late Preterm Infants

OBJECTIVE

To evaluate the association between neonatal intensive care unit (NICU) admission and breastfeeding practices, infant supine sleep positioning, and postnatal smoking among mothers of late preterm infants.

STUDY DESIGN

Data from 36 states using the 2000-2013 Pregnancy Risk Assessment Monitoring System were analyzed. χ² tests and 95% CI assessed infant and maternal characteristics and recommended care practices for late preterm infants based on NICU admission after birth. Adjusted prevalence ratios (APR) for breastfeeding initiation and continuation at 10 weeks, supine sleep position, and postnatal smoking were estimated using multivariable logistic regression models, controlling for infant and maternal characteristics. Analyses were weighted and SEs accounted for the complex survey design.

RESULTS

Our sample included 62 494 late preterm infants, representing a weighted population of 1 441 451 late preterm infants. In the adjusted analysis, mothers of late preterm infants admitted to a NICU were more likely to initiate breastfeeding (APR 1.07; 95% CI 1.05-1.09) and place their infants in supine sleep position (1.04; 95% CI 1.01-1.06) than mothers of late preterm infants not admitted to a NICU. There was no significant difference between groups for breastfeeding continuation or postnatal smoking.

CONCLUSIONS

Mothers of late preterm infants admitted to a NICU were more likely to initiate breastfeeding and practice supine sleep position than mothers of late preterm infants not admitted to a NICU. Future work should seek to identify the drivers of these differences to develop effective strategies to engage mothers in these health promoting infant care practices.

Comparison of the Finger Feeding Method Versus Syringe Feeding Method in Supporting Sucking Skills of Preterm Babies

Aim: The aim of this study is to compare the efficiency of a new method called "finger feeding" with a well-known technique called syringe feeding for improving sucking skills and accelerating transition to breastfeeding in preterm infants. Materials and Methods: Totally 70 babies were included in this prospective randomized controlled study. Finger feeding method was applied in Group 1 (n = 35) and syringe feeding method was applied in Group 2 (n = 35). The COMFORTneo scale (CnS), oxygen saturation, pulse, respiratory rate, body temperature, amount of breast milk taken, and vomiting data were recorded before and after both applications. Hospitalization period and time elapsed for complete transition from both methods to breastfeeding were also recorded. Results: There was no statistical difference for birth weights, mean gestational age, and vital signs recorded before and after feeding between two groups. Predicted comfort and distress scores of Group 1 determined by the CnS were significantly lower than those of Group 2. This means that babies in the finger feeding group had better comfort than the those in Group 2 (p = 0.000). Time passed for transition to breastfeeding was significantly shorter than that in Group 2 (19.4 ± 15.0 days versus 29.7 ± 10.2 days, p = 0.000). Group 1 had lower amount of food leakage while feeding and their average weight gain at the end of 10th day was significantly higher (322.1 ± 82.3 g versus 252 ± 108.4 g, p = 0.004). They also were discharged earlier than Group 2 (25.8 ± 17.4 days versus 35.9 ± 13.0 days, p = 0.001). Conclusion: Finger feeding method is an effective way for increasing sucking abilities, accelerating transition to breastfeeding, and shortens duration of hospitalization in preterm infants.

The trends in the usage of breast milk in neonatal intensive care setting

BACKGROUND

Many interventions have been designed to increase breast milk (BM) consumption among preterm and critical-term infants in neonatal units. The aim of this study was to determine the trends in the usage of BM in a neonatal unit and the risk factors for insufficient breast-milk feeding at discharge.

METHODS

This retrospective study included newborn infants who hospitalized in the neonatal unit during two periods in different years, a 15-month period in 2012-2013 and in 2017-2018. The primary outcomes were the availability of BM within 24 h after delivery and the status of infant feeding at discharge.

RESULTS

During two periods of the study, a total of 3,018 infants were included in the study. The rate of BM expression within the first 24 h after delivery was 92.9%, and it was found that the first period of the study, caesarean section delivery, very low birth weight, being first-time mother, and young maternal age were each independently associated with the delayed initiation of BM expression (P < 0.05). At discharge, 87.6% of the infants had been feeding with BM. Multiple births, the delayed initiation of BM expression, and the length of hospital stay were associated with inadequate BM feeding at discharge (P < 0.001).

CONCLUSION

This study showed that interventions supporting BM feeding, which have recently been carried out, made improvements to the initiation of BM expression among mothers whose babies were admitted to the neonatal unit, and in the rate of BM feeding among infants at discharge.

Racial/ethnic disparities and human milk use in necrotizing enterocolitis

BACKGROUND

The impact of human milk use on racial/ethnic disparities in necrotizing enterocolitis (NEC) incidence is unknown.

METHODS

Trends in NEC incidence and human milk use at discharge were evaluated by race/ethnicity among 47,112 very low birth weight infants born in California from 2008 to 2017. We interrogated the association between race/ethnicity and NEC using multilevel regression analysis, and evaluated the effect of human milk use at discharge on the relationship between race/ethnicity and NEC using mediation analysis.

RESULTS

Annual NEC incidence declined across all racial/ethnic groups from an aggregate average of 4.8% in 2008 to 2.6% in 2017. Human milk use at discharge increased over the time period across all racial groups, and non-Hispanic (NH) black infants received the least human milk each year. In multivariable analyses, Hispanic ethnicity (odds ratio (OR) 1.27, 95% confidence interval (CI) 1.02-1.57) and Asian or Pacific Islander race (OR 1.35, 95% CI 1.01-1.80) were each associated with higher odds of NEC, while the association of NH black race with NEC was attenuated after adding human milk use at discharge to the model. Mediation analysis revealed that human milk use at discharge accounted for 22% of the total risk of NEC in non-white vs. white infants, and 44% in black vs. white infants.

CONCLUSIONS

Although NEC incidence has declined substantially over the past decade, a sizable racial/ethnic disparity persists. Quality improvement initiatives augmenting human milk use may further reduce the incidence of NEC in vulnerable populations.

Preterm Nutrition and Clinical Outcomes

Background. In low-income countries, preterm nutrition is often inadequately addressed. The aim of the study was to assess the patterns of feeding and associated clinical outcomes of preterm neonates admitted to neonatal intensive care units in Ethiopia. Method. This was a multicenter, prospective study. Infants' clinical characteristics at birth, daily monitoring of feeding history, and weight measurements were collected. An outcome assessment was completed at 28 days. Result. For this analysis, 2560 infants (53% male) were eligible. The mean (SD) gestational age was 33.1 (2.2) weeks. During the hospital stay the proportion of infants on breast milk only, preterm formula, term formula, and mixed feeding was 58%, 27.4%, 1.6%, and 34.1%, respectively. Delay in enteral feeding was associated with increased risk of death (odds ratio [OR] = 1.92, 95% confidence interval [CI] = 1.33-2.78; P < .001) and (OR = 5.06, 95% CI = 3.23-7.87; P < .001) for 1 to 3 and 4 to 6 days of delay in enteral feeding, respectively, after adjusting for possible confounders. The length of delay in enteral feeding was associated with increased risk of hypoglycemia (OR = 1.2, 95% CI = 1.1-1.2; P = .005). The mortality rate was lower in hospitals providing preterm formula more often (P = .04). Half of the infants continued losing weight at the time of discharge. Conclusion. Delayed enteral feeding significantly increases the risk of mortality before discharge and hypoglycemia in preterm infants in resource-limited settings. Ensuring adequate nutritional support of preterm infants is highly needed.

A Complex Systems Model of Breast Cancer Etiology: The Paradigm II Conceptual Model

BACKGROUND

The etiology of breast cancer is a complex system of interacting factors from multiple domains. New knowledge about breast cancer etiology continues to be produced by the research community, and the communication of this knowledge to other researchers, practitioners, decision makers, and the public is a challenge.

METHODS

We updated the previously published Paradigm model (PMID: 25017248) to create a framework that describes breast cancer etiology in four overlapping domains of biologic, behavioral, environmental, and social determinants. This new Paradigm II conceptual model was part of a larger modeling effort that included input from multiple experts in fields from genetics to sociology, taking a team and transdisciplinary approach to the common problem of describing breast cancer etiology for the population of California women in 2010. Recent literature was reviewed with an emphasis on systematic reviews when available and larger epidemiologic studies when they were not. Environmental chemicals with strong animal data on etiology were also included.

RESULTS

The resulting model illustrates factors with their strength of association and the quality of the available data. The published evidence supporting each relationship is made available herein, and also in an online dynamic model that allows for manipulation of individual factors leading to breast cancer (https://cbcrp.org/causes/).

CONCLUSIONS

The Paradigm II model illustrates known etiologic factors in breast cancer, as well as gaps in knowledge and areas where better quality data are needed.

IMPACT

The Paradigm II model can be a stimulus for further research and for better understanding of breast cancer etiology.

Enhancing Breastfeeding - Home-Based Education on Self-Efficacy: A Preventive Strategy

Background:

The aim of this study is to evaluate the effects of home-based education intervention on the exclusivity and promoting the rates of self-efficacy of breastfeeding.

Materials and Methods:

A randomized controlled trial was conducted Arak University of Medical Sciences in Takeghani Hospital in Iran between June 2015 and October 2015. A total of 130 eligible and voluntary women hospitalized in Arak University of Medical Sciences Hospital postpartum wards were randomized to receive usual care (n = 65) or education with CD and pamphlets (n = 65). Data regarding exclusive breastfeeding were collected using Denis and Fox's breastfeeding self-efficacy questionnaire. The primary outcome was collected by one assistant researcher during first postpartum visit. The secondary outcome was collected 4 weeks after birth of babies by telephone interviews. Data analysis was performed using descriptive (frequency, mean), independent samples t-test, Student's t-test, t²-test, and Chi-square test. All values of P < 0.05 were considered statistically significant.

Results:

There was no significant differences between the intervention and control groups with regard to age (P = 0.086) and gestational age (P = 0.741). The breastfeeding self-efficacy scores were higher in the intervention group (63.66 ± 6.11) than in the control group (57.04 ± 6.18) after 1 month of childbirth (P = 0.001). The exclusive breastfeeding rate in intervention group was 89.2 (n = 58) at 1^st month after education compared with 55.4% (n = 36) in control group (P = 0.001).

Conclusions:

In a setting, a high breastfeeding rate and self-efficacy scores were found in education group. Therefore, nurses and midwives are thus required to adopt various health education strategies, such as home education, encourage breastfeeding.

Fortifier selection and dosage enables control of breast milk osmolarity

BACKGROUND

Human breast milk (BM) fortification is required to feed preterm newborns with less than 32 weeks of gestation. However, addition of fortifiers increases osmolarity and osmolarity values higher than 450 mOsm/kg may be related to gastrointestinal pathology. Hence, fortifier selection and dosage are key to achieve optimal feeding.

OBJECTIVES

To compare the effect on osmolality of adding different fortifications, including recently developed formulations, to BM and to study evolution of osmolarity over time in supplemented BM.

METHODS

Frozen mature BM from 10 healthy mothers of premature newborns was fortified with each of the following human milk fortifiers (HMF): AlmirónFortifier®, NANFM85®, or PreNANFM85®. In addition, fortified BMs were modified with one of the following nutritional supplements (NS): Duocal MCT®, Nutricia® AminoAcids Mix, or Maxijul®. Osmolality of BM alone, fortified and/or supplemented was measured at 1 and 22 hours after their preparation. All samples were kept at 4°C throughout the study.

RESULTS

Osmolality of BM alone was close to 300 mOsm/kg and did not change over 22 hours. When equicaloric amounts of HMF AlmirónFortifier®, NANFM85®, and PreNANFM85® were added to BM, osmolality increased roughly to 480 mOsm/kg with the first two fortifiers and only to 433±6 mOsm/kg with the third one. Upon addition of any of four different NSs to BM modified with AlmirónFortifier® and NANFM85®, osmolality reached values greater than 520 mOsm/kg, while osmolality of PreNANFM85® with two out of the four NSs remained below 490 mOsm/kg. NSs supplementing carbohydrates and hydrolysed proteins resulted into a higher increase of BM osmolarity. Osmolality increased significantly with time and, after 22h, only BM modified with PreNANFM85® remained below 450 mOsm/kg.

CONCLUSIONS

Upon addition of the HMFs tested, BM osmolality increases significantly and keeps raising over time. All HMFs but the recently developed PreNAN FM85® at 4% exceed the AAP recommended threshold for osmolarity of 450 mOsm/kg. Addition of NSs to PreNAN FM85® at 4% significantly increases osmolality above 450 mOsm/Kg. Thus, using PreNAN FM85® at 5% may be preferable to adding nutritional supplements since nutritional recommendations by the ESPGHAN are reached with a lower increase in osmolality.

Disparities in Preterm Infant Emergency Room Utilization and Rehospitalization by Maternal Immigrant Status

OBJECTIVE

To evaluate the effects of immigrant mother status and risk factors on the rates of emergency room (ER) visits and rehospitalizations of preterm infants within 90 days after discharge.

STUDY DESIGN

This was a retrospective cohort study of 732 mothers of 866 preterm infants (<37 weeks of gestational age) cared for in a neonatal intensive care unit (NICU) for >5 days. Medical and demographic data and number of ER visits and rehospitalizations were collected. The primary outcomes were the numbers of ER visits and rehospitalizations. Analysis included bivariate comparisons of immigrant and native mother-infant dyads. Regression models were run to estimate the effects of immigrant mother status and risk factors.

RESULTS

Compared with native mothers, immigrant mothers (176 of 732; 24%) were more likely to be older, to be gravida >1, to be nonwhite, to have a non-English primary language, to have less than a high school education, and to have Medicaid insurance but less likely to have child protective services, substance abuse, and a mental health disorder. Infants of immigrant mothers (203 of 866; 23%) had higher rates of ER visits and more days of hospitalization compared with infants of native mothers. Among immigrant mothers only, >5 years living in the US, non-English primary language, and bronchopulmonary dysplasia (BPD) were predictive of ER visits, whereas Medicaid and BPD were predictive of rehospitalization. For the total cohort, after an interaction between Medicaid and immigrant status was added to the model, immigrant status became nonsignificant and immigrant mothers with Medicaid emerged as a strong predictor of hospitalization and a borderline predictor for ER visits.

CONCLUSIONS

Among immigrant mothers, non-English primary language, >5 years living in the US, and BPD increased the odds of an ER visit. For the total cohort, however, the interaction of immigrant mother with Medicaid as a marker of poverty provided a significant modifying effect on increased rehospitalization and ER use.

You can't flight, you need to fight-A qualitative study of mothers' experiences of feeding extremely preterm infants

AIM

To describe mother's experiences of feeding their extremely preterm infant.

BACKGROUND

When an infant is born extremely preterm, there is a long rocky road for the mother if she wants to breastfeed. Some manage to reach their goals, others do not. Studies of feeding extremely preterm infants in the neonatal intensive care unit (NICU) are scarce.

DESIGN

A qualitative method with an inductive approach.

METHODS

Nine mothers giving birth to extremely preterm infants were interviewed by telephone after discharge from the NICU. The interviews were transcribed verbatim and analysed with qualitative content analysis. The COREQ checklist was followed.

RESULTS

The overall theme was "you can't flight, you need to fight." The theme reflects the mothers' will to do the best for their infants even if the struggle with milk expression and breastfeeding practice evoked feelings of helplessness, exposure, worry and disappointment. The categories forming the theme were as follows: The wish to provide own breastmilk; For the infant's best; Loss of control; and Help to reach the goals.

CONCLUSION

The mothers had a strong will to provide breastmilk to their infants but requested more support in order to be successful.

RELEVANCE TO CLINICAL PRACTICE

There is a need for evidence-based support programmes for mothers of extremely preterm infants to encourage them to persevere with milk expression and breastfeeding over time.

Racial and Ethnic Disparities in Human Milk Intake at Neonatal Intensive Care Unit Discharge among Very Low Birth Weight Infants in California

OBJECTIVES

To examine how infant and maternal factors, hospital factors, and neighborhood-level factors impact or modify racial/ethnic disparities in human milk intake at hospital discharge among very low birth weight infants.

STUDY DESIGN

We studied 14 422 infants from 119 California Perinatal Quality Care Collaborative neonatal intensive care units born from 2008 to 2011. Maternal addresses were linked to 2010 census tract data, representing neighborhoods. We tested for associations with receiving no human milk at discharge, using multilevel cross-classified models.

RESULTS

Compared with non-Hispanic whites, the adjusted odds of no human milk at discharge was higher among non-Hispanic blacks (aOR 1.33 [1.16-1.53]) and lower among Hispanics (aOR 0.83 [0.74-0.93]). Compared with infants of more educated white mothers, infants of less educated white, black, and Asian mothers had higher odds of no human milk at discharge, and infants of Hispanic mothers of all educational levels had similar odds as infants of more educated white mothers. Country of birth and neighborhood socioeconomic was also associated with disparities in human milk intake at discharge.

CONCLUSIONS

Non-Hispanic blacks had the highest and Hispanic infants the lowest odds of no human milk at discharge. Maternal education and country of birth were the biggest drivers of disparities in human milk intake, suggesting the need for targeted approaches of breastfeeding support.

Developing routinely recorded clinical data from electronic patient records as a national resource to improve neonatal health care: the Medicines for Neonates research programme

Background

Clinical data offer the potential to advance patient care. Neonatal specialised care is a high-cost NHS service received by approximately 80,000 newborn infants each year.

Objectives

(1) To develop the use of routinely recorded operational clinical data from electronic patient records (EPRs), secure national coverage, evaluate and improve the quality of clinical data, and develop their use as a national resource to improve neonatal health care and outcomes. To test the hypotheses that (2) clinical and research data are of comparable quality, (3) routine NHS clinical assessment at the age of 2 years reliably identifies children with neurodevelopmental impairment and (4) trial-based economic evaluations of neonatal interventions can be reliably conducted using clinical data. (5) To test methods to link NHS data sets and (6) to evaluate parent views of personal data in research.

Design

Six inter-related workstreams; quarterly extractions of predefined data from neonatal EPRs; and approvals from the National Research Ethics Service, Health Research Authority Confidentiality Advisory Group, Caldicott Guardians and lead neonatal clinicians of participating NHS trusts.

Setting

NHS neonatal units.

Participants

Neonatal clinical teams; parents of babies admitted to NHS neonatal units.

Interventions

In workstream 3, we employed the Bayley-III scales to evaluate neurodevelopmental status and the Quantitative Checklist of Autism in Toddlers (Q-CHAT) to evaluate social communication skills. In workstream 6, we recruited parents with previous experience of a child in neonatal care to assist in the design of a questionnaire directed at the parents of infants admitted to neonatal units.

Data sources

Data were extracted from the EPR of admissions to NHS neonatal units.

Main outcome measures

We created a National Neonatal Research Database (NNRD) containing a defined extract from real-time, point-of-care, clinician-entered EPRs from all NHS neonatal units in England, Wales and Scotland (n = 200), established a UK Neonatal Collaborative of all NHS trusts providing neonatal specialised care, and created a new NHS information standard: the Neonatal Data Set (ISB 1595) (see http://webarchive.nationalarchives.gov.uk/±/http://www.isb.nhs.uk/documents/isb-1595/amd-32–2012/index_html; accessed 25 June 2018).

Results

We found low discordance between clinical (NNRD) and research data for most important infant and maternal characteristics, and higher prevalence of clinical outcomes. Compared with research assessments, NHS clinical assessment at the age of 2 years has lower sensitivity but higher specificity for identifying children with neurodevelopmental impairment. Completeness and quality are higher for clinical than for administrative NHS data; linkage is feasible and substantially enhances data quality and scope. The majority of hospital resource inputs for economic evaluations of neonatal interventions can be extracted reliably from the NNRD. In general, there is strong parent support for sharing routine clinical data for research purposes.

Limitations

We were only able to include data from all English neonatal units from 2012 onwards and conduct only limited cross validation of NNRD data directly against data in paper case notes. We were unable to conduct qualitative analyses of parent perspectives. We were also only able to assess the utility of trial-based economic evaluations of neonatal interventions using a single trial. We suggest that results should be validated against other trials.

Conclusions

We show that it is possible to obtain research-standard data from neonatal EPRs, and achieve complete population coverage, but we highlight the importance of implementing systematic examination of NHS data quality and completeness and testing methods to improve these measures. Currently available EPR data do not enable ascertainment of neurodevelopmental outcomes reliably in very preterm infants. Measures to maintain high quality and completeness of clinical and administrative data are important health service goals. As parent support for sharing clinical data for research is underpinned by strong altruistic motivation, improving wider public understanding of benefits may enhance informed decision-making.

Future work

We aim to implement a new paradigm for newborn health care in which continuous incremental improvement is achieved efficiently and cost-effectively by close integration of evidence generation with clinical care through the use of high-quality EPR data. In future work, we aim to automate completeness and quality checks and make recording processes more ‘user friendly’ and constructed in ways that minimise the likelihood of missing or erroneous entries. The development of criteria that provide assurance that data conform to prespecified completeness and quality criteria would be an important development. The benefits of EPR data might be extended by testing their use in large pragmatic clinical trials. It would also be of value to develop methods to quality assure EPR data including involving parents, and link the NNRD to other health, social care and educational data sets to facilitate the acquisition of lifelong outcomes across multiple domains.

Study registration

This study is registered as PROSPERO CRD42015017439 (workstream 1) and PROSPERO CRD42012002168 (workstream 3).

Funding

The National Institute for Health Research Programme Grants for Applied Research programme (£1,641,471). Unrestricted donations were supplied by Abbott Laboratories (Maidenhead, UK: £35,000), Nutricia Research Foundation (Schiphol, the Netherlands: £15,000), GE Healthcare (Amersham, UK: £1000). A grant to support the use of routinely collected, standardised, electronic clinical data for audit, management and multidisciplinary feedback in neonatal medicine was received from the Department of Health and Social Care (£135,494).

Breast milk expression for premature infant in the neonatal intensive care unit: A review of mothers' perceptions

OBJECTIVE

To identify the existing literature on mothers' perception towards the impact of expressing breast milk for their premature infant in the neonatal intensive care unit.

METHOD

Guided by the PRISMA Statement review checklist, a systematic review of the Scopus and Web of Science database has identified 10 related studies. The articles were assessed and analyzed after evaluated using The Joanna Briggs Institute Critical Appraisal tools (JBI). Thematic analysis was obtained after using Nvivo software as a tool for data analysis by author.

RESULT

Further review of these articles resulted in three main themes-maternal changes during expressing breast milk, pumping challenges and impact of motivation factors to initiating lactation.

CONCLUSION

Expressing breast milk should be recognized as an important way to restructure motherhood with a preterm infant in NICU. However, maintaining expressed breast milk during preterm infants' treatment period in NICU may increase stress and difficulties for some mothers. Some recommendations are emphasized in relation to the need for more qualitative studies in this issue, which is to have a specific and standard systematic review method for guide research synthesis in context of climate change adaptation.

The maternal health behaviours of non-Irish nationals during pregnancy and the effect of time living in Ireland

OBJECTIVES

Maternal health behaviours (MHBs) can influence pregnancy outcomes. Despite efforts internationally to encourage positive MHBs, women often fail to comply with pregnancy guidelines. International studies show differences in MHBs between nationalities and an effect of time spent in the host country. There is limited Irish data in this area, with no previous research relating to the effect of time in Ireland.

STUDY DESIGN

This study is a cross-sectional analysis of the Growing Up in Ireland infant cohort, a nationally representative longitudinal study.

METHODS

Examination of the MHBs of non-Irish nationals during pregnancy and the effect of time in Ireland on the said behaviours.

RESULTS

An association was found between time spent in Ireland and increased alcohol consumption prevalence. Those living in Ireland for ≤5 years were 60.8% less likely to consume alcohol during pregnancy (0.000) and 29.3% less likely to take folic acid before conception (0.021). Those who smoked during pregnancy were 98.6% more likely to consume alcohol (0.000) and those who consumed alcohol were 95.2% more likely to smoke during pregnancy (0.000).

CONCLUSIONS

The results demonstrate differences in MHBs and the influence of time living in Ireland. These findings are of relevance for policy and intervention planning to optimise pregnancy outcomes among non-nationals.

Associations Between Maternity Care Practices and 2-Month Breastfeeding Duration Vary by Race, Ethnicity, and Acculturation

Objectives This study examines the associations between specific maternity care practices and breastfeeding duration for Spanish-speaking Hispanic, English-speaking Hispanic, non-Hispanic Native American, and non-Hispanic White women. Methods We analyzed data from the 2012-2014 New Mexico Pregnancy Risk Assessment Monitoring System. We used survey language as a proxy measure of acculturation and categorized women as Spanish-speaking Hispanic, English-speaking Hispanic, non-Hispanic Native American, and non-Hispanic White. We conducted bivariate analyses to compare rates of breastfeeding at 2 months and experiences of maternity care practices and logistic regression analysis to estimate the effects of these practices on breastfeeding duration for each group. Results Hispanic women were less likely than non-Hispanic women to breastfeed for at least 2 months (67.9% vs. 76.6%; p = 0.000); however, this varied significantly by acculturation level: 78.1% of Spanish-speaking Hispanic women compared to 66.1% of English-speaking Hispanic women breastfed for at least 2 months (p = 0.000). The effects of specific maternity care practices on duration varied across groups. Among non-Hispanic White, Native American, and English-speaking Hispanic women, breastfeeding while at the hospital had the strongest effect (AOR 2.09, 95% CI 1.67-2.61; AOR 2.71, 95% CI 2.08-3.52; and AOR 1.99, 95% CI 1.76-2.25, respectively). Among Spanish-speaking Hispanic women, being encouraged to breastfeed on demand had the strongest effect (AOR 5.179, 95% CI 3.86-6.94). Conclusions for Practice The effects of maternity care practices on breastfeeding duration vary by race, ethnicity, and acculturation level. Health care systems must acknowledge the diversity of their patient populations when seeking to develop and implement breastfeeding-friendly practices.

Racial and Ethnic Disparities in the Use of Mother's Milk Feeding for Very Low Birth Weight Infants in Massachusetts

OBJECTIVE

To examine the extent to which maternal race/ethnicity is associated with mother's milk use among hospitalized very low birth weight (VLBW) infants and maternal receipt of hospital breastfeeding support practices (human milk prenatal education, first milk expression <6 hours after delivery, lactation consultation <24 hours, any skin-to-skin care <1 month).

STUDY DESIGN

We studied 1318 mother-VLBW infant pairs in 9 Massachusetts level 3 neonatal intensive care units (NICUs) between January 2015 and November 2017. We estimated associations of maternal race/ethnicity with any and exclusive mother's milk on day 7, on day 28, and at discharge/transfer and hospital practices. We estimated HRs comparing the probability of continued milk use over the hospitalization by race/ethnicity and tested mediation by hospital practices, adjusting for birth weight and gestational age and including hospital and plurality as random effects.

RESULTS

Mothers were 48% non-Hispanic white, 21% non-Hispanic black, and 20% Hispanic. Initiation of mother's milk was similar across groups, but infants of Hispanic mothers (hazard ratio [HR], 2.71; 95% CI, 2.05-3.59) and non-Hispanic black mothers (HR, 1.55; 95% CI, 1.17-2.07) stopped receiving milk earlier in the hospitalization compared with infants of non-Hispanic white mothers. Hispanic mothers had lower odds of providing skin-to-skin care at <1 month (OR, 0.61; 95% CI, 0.43-0.87) compared with non-Hispanic whites.

CONCLUSIONS

Hispanic and non-Hispanic black mothers were less likely than non-Hispanic white mothers to continue providing milk for their VLBW infants throughout the NICU stay.

Maternal breast cancer risk in relation to birthweight and gestation of her offspring

BACKGROUND

Parity and age at first pregnancy are well-established risk factors for breast cancer, but the effects of other characteristics of pregnancies are uncertain and the literature is inconsistent.

METHODS

In a cohort of 83,451 parous women from the general population of the UK, which collected detailed information on each pregnancy and a wide range of potential confounders, we investigated the associations of length of gestation and birthweight of offspring in a woman's pregnancies with her breast cancer risk, adjusting for a full range of non-reproductive as well as reproductive risk factors unlike in previous large studies.

RESULTS

Gestation of the first-born offspring was significantly inversely related to the risk of pre-menopausal breast cancer (p trend = 0.03; hazard ratio (HR) for 26-31 compared with 40-41 weeks, the baseline group, = 2.38, 95% confidence interval (CI) 1.26-4.49), and was borderline significantly related to risk of breast cancer overall (p trend = 0.05). Risk was significantly raised in mothers of high birthweight first-born (HR for breast cancer overall = 1.53, 95% CI 1.06-2.21 for ≥ 4500 g compared with 3000-3499 g, the baseline group). For gestation and birthweight of most recent birth, there were no clear effects. Analyses without adjustment for confounders (other than age) gave similar results.

CONCLUSIONS

Our data add to evidence that short gestation pregnancies may increase the risk of breast cancer, at least pre-menopausally, perhaps by hormonal stimulation and breast proliferation early in pregnancy without the opportunity for the differentiation that occurs in late pregnancy. High birthweight first pregnancies may increase breast cancer risk, possibly through the association of birthweight with oestrogen and insulin-like growth factor 1 levels.

The association between gestational age and otitis media during childhood: a population-based cohort analysis

Otitis media (OM) carries a tremendous global health burden and potentially severe long-term consequences. The objective of this study was to determine the impact of birth at different gestational ages on the incidence of childhood OM.A population-based cohort analysis was conducted. All singleton deliveries occurring between 1991 and 2014 at a regional tertiary medical center were included. Gestational age on delivery was divided into six subgroups: early (&lt;34 weeks gestation; 0 out of 7) and late (34 weeks gestation; 0 out of 7 to 36 weeks gestation; 6 out of 7) preterm, and early (37 weeks gestation; 0 out of 7 to 38 weeks gestation; 6 out of 7), full (39 weeks gestation; 0 out of 7 to 40 weeks gestation; 6 out of 7), late (41 weeks gestation; 0 out of 7 to 41 weeks gestation; 6 out of 7) and post (⩾42 weeks 0 out of 7) term deliveries. Rates of OM-related hospitalizations up to 18 years of age were assessed. Weibull parametric hazards model was used to study the association between gestational age at birth and the risk for OM-related hospitalizations while controlling for potential confounders.During the study period, 238,622 deliveries met the inclusion criteria. OM-related hospitalizations of the offspring (n=4724) were significantly more common in the preterm (early 3.6%, late 2.4%) and early-term born children (2.2%) and decreased gradually across the full (1.9%), late (1.7%) and post (1.6%) term groups (χ2-test for trends P&lt;0.001). In the Weibull regression model, early preterm, as well as early-term deliveries exhibited an independent association with pediatric OM (adjusted hazard ratios: 1.67 and 1.09, respectively, P&lt;0.02).Deliveries occurring at preterm and early term are associated with higher rates of pediatric OM-related hospitalizations, which decrease gradually as gestational age advances.

Low breastfeeding continuation to 6 months for very preterm infants: A European multiregional cohort study

Breastfeeding confers multiple benefits for the health and development of very preterm infants, but there is scarce information on the duration of breastfeeding after discharge from the neonatal intensive care unit (NICU). We used data from the Effective Perinatal Intensive Care in Europe population-based cohort of births below 32 weeks of gestation in 11 European countries in 2011-2012 to investigate breastfeeding continuation until 6 months. Clinical and sociodemographic characteristics were collected from obstetric and neonatal medical records as well as parental questionnaires at 2 years of corrected age. Among 3,217 ever-breastfed infants, 34% were breastfeeding at 6 months of age (range across countries from 25% to 56%); younger and less educated mothers were more likely to stop before 6 months (adjusted relative risk [aRR] <25 years: 0.68, 95% CI [0.53, 0.88], vs. 25-34 years; lower secondary: 0.58, 95% CI [0.45, 0.76] vs. postgraduate education). Multiple birth, bronchopulmonary dysplasia (BPD), and several neonatal transfers reduced the probability of continuation but not low gestational age, fetal growth restriction, congenital anomalies, or severe neonatal morbidities. Among infants breastfeeding at discharge, mixed versus exclusive breast milk feeding at discharge was associated with stopping before 6 months: aRR = 0.60, 95% CI [0.48, 0.74]. Low breastfeeding continuation rates in this high-risk population call for more support to breastfeeding mothers during and after the neonatal hospitalization, especially for families with low socio-economic status, multiples, and infants with BPD. Promotion of exclusive breastfeeding in the NICU may constitute a lever for improving breastfeeding continuation after discharge.

Prevalence and duration of breast milk feeding in very preterm infants: A 3-year follow-up study and a systematic literature review

BACKGROUND

The World Health Organization recommends exclusive breast milk feeding until 6 months and continuing up to 2 years of age; little is known about whether very preterm infants are fed in accordance with these recommendations. We aimed to describe the prevalence and duration of breast milk feeding in very preterm children and to systematically review internationally published data.

METHODS

We evaluated breast milk feeding initiation and duration in very preterm children born in 2 Portuguese regions (2011-2012) enrolled in the EPICE cohort and followed-up to the age of 3 (n = 466). We searched PubMed^® from inception to January 2017 to identify original studies reporting the prevalence and/or duration of breast milk feeding in very preterm children.

RESULTS

91.0% of children received some breast milk feeding and 65.3% were exclusively breast fed with a median duration of 2 months for exclusive and 3 months for any breast milk; only 9.9% received exclusive breast milk for at least 6 months, 10.2% received any breast milk for 12 months or more, and 2.0% for up to 24 months. The literature review identified few studies on feeding after hospital discharge (n = 9); these also reported a low prevalence of exclusive breast milk feeding at 6 months (1.0% to 27.0%) and of any breast milk at 12 months (8.0% to 12.0%).

CONCLUSIONS

The duration of breast milk feeding among Portuguese very preterm infants was shorter than recommended. However, this appears to be common globally. Research is needed to inform strategies to promote continued breast milk feeding.

Impact of NICU admission on Colorado-born late preterm infants: breastfeeding initiation, continuation and in-hospital breastfeeding practices

OBJECTIVE

Compare breastfeeding initiation and continuation rates, and in-hospital breastfeeding practices, of late preterm infants (LPIs) cared for in a NICU versus those cared for exclusively in the nursery (non-NICU).

STUDY DESIGN

Using data from the 2009-2014 Colorado Pregnancy Risk Assessment Monitoring System (PRAMS), breastfeeding initiation, continuation, and in-hospital breastfeeding practices of NICU versus non-NICU LPIs (34 0/7 to 36 6/7 weeks gestation, n = 20,767) were analyzed, and multivariate models were created controlling for maternal and infant characteristics.

RESULTS

Mothers of NICU LPIs were equally likely to initiate breastfeeding (APR 1.0; 95% CI 0.95-1.06) but less likely to continue breastfeeding at 10 weeks (APR 0.86; 95% CI 0.76-0.99) compared to mothers of non-NICU LPIs. Mothers of NICU LPIs were less likely to breastfeed in the hospital, less likely to be told to feed infants on demand, and more likely to be given a breast pump during hospitalization.

CONCLUSIONS

There are significant differences in both breastfeeding continuation and several in-hospital breastfeeding practices for NICU versus non-NICU LPIs. Further research is needed so that targeted policies and programs can be developed to improve breastfeeding rates in this vulnerable population.

A population-based study of the relationship between perinatal depressive symptoms and breastfeeding: a cross-lagged panel study

Studies suggest that perinatal depression and breastfeeding co-vary, but determining the relationship between breastfeeding and perinatal depression has proved challenging. A bidirectional association has been suggested, implying that depression may impact on breastfeeding and that breastfeeding might influence depressive symptoms. The present study aimed to contribute to the understanding of the relationship between perinatal depression and breastfeeding in a population-based sample where we used structural equation modeling (SEM) techniques to investigate cross-lagged and autoregressive effects as well as concurrent associations. The present study was part of a large-scale Norwegian prospective study. Nurses and midwives at nine well-baby clinics recruited participants. All the well-baby clinics had implemented the Edinburgh method, which combines the use of the Edinburgh Postnatal Depression Scale (EPDS) with an immediate follow-up conversation. Completed EPDS forms were recorded, as well as the mothers' reports of breastfeeding behaviors. Depressive symptoms measured prenatally during the last trimester, at 4 and 6 months postpartum did not predict breastfeeding behavior at 4, 6, or 12 months postpartum, respectively. Furthermore, breastfeeding at 4 and 6 months postpartum did not predict depressive symptomatology at 6 or 12 months postpartum. There were no significant concurrent associations between breastfeeding and depressive symptoms at 4, 6, or 12 months postpartum. Depressive symptoms predicted subsequent depressive symptoms and breastfeeding predicted subsequent breastfeeding. There was no evidence of a relationship between depressive symptoms and breastfeeding. Potential explanations and implications are discussed.

Environmental Scan of Breastfeeding Resources in Canadian NICUs

We conducted an environmental scan using a mixed methods approach to determine the types and frequencies of breastfeeding resources available to mothers of infants in Canadian NICUs. Through interviews with key informants from 29 Level 3 NICUs, we identified six categories of resources: breastfeeding-friendly layout, breastfeeding support personnel, breastfeeding education for mothers, breast pump-related resources, coordination of postdischarge breastfeeding support, and breastfeeding-related policies. Findings from this national study indicate that a wide range of breastfeeding resources were reportedly available in Canadian Level 3 NICUs. NICU professionals are encouraged to connect with other units across Canada to facilitate the exchange of breastfeeding resources and best practices.

The effectiveness of interventions using relaxation therapy to improve breastfeeding outcomes: A systematic review

Maternal psychological state is recognised to influence lactation success, largely by affecting milk ejection. Thus, increased psychological distress can disrupt milk flow and in the long‐term, affect milk synthesis. Conversely, it is possible that milk ejection could be improved by using relaxation therapy during breastfeeding. We performed a systematic review to evaluate the effectiveness of interventions using relaxation therapy to improve breastfeeding outcomes and to assess the consequent impact(s) on infant growth and behaviour. A literature search was performed using the PRISMA guidelines where we included intervention studies (including nonrandomised controlled studies) using relaxation therapy in breastfeeding mothers during the post‐natal period. Out of 147 identified records at the initial search, 5 studies were eligible, of which 3 were randomised controlled trials and 2 were nonrandomised or quasi‐experimental studies. These studies were conducted in Europe, America, and India and included 311 mother–infant pairs, of which 64 infants were full‐term and 247 were premature infants. Relaxation therapy was shown to increase milk yield in mothers of preterm infants in 2 randomised trials, however, the milk sampling protocol for these studies could be questioned. None of the studies investigated the consequent effects on infant outcomes. Overall, limited evidence was found on the effectiveness of relaxation therapy on breast milk composition and infant outcomes. Experimental studies with better standardisation of protocol and robust methodological design are needed to investigate the effectiveness of relaxation therapy on both breastfeeding and infant growth and behavioural outcomes.

Variation in Safe Sleep and Breastfeeding Practices Among Non-Hispanic Black Mothers in the United States According to Birth Country

OBJECTIVE

To examine variation in safe sleep and breastfeeding practices among US non-Hispanic black (NHB) mothers according to birth country.

METHODS

We analyzed NHB mothers who were surveyed regarding safe sleep and breastfeeding practices when their infants were 2 to 6 months of age in 2011 to 2014, as part of a larger national study. We examined prevalences of safe sleep and breastfeeding practices according to birth country and examined odds of adherence to American Academy of Pediatrics recommended safe sleep and breastfeeding practices in foreign-born NHB mothers, compared with US-born NHB mothers. Our multivariate models included adjustment for maternal age, education, income, and US geographic region, and infant age at the time of the survey.

RESULTS

Among 828 NHB mothers, 690 (83%) were US-born, 42 (5%) were African-born, 47 (6%) were Haitian-born, 24 (3%) were Jamaican-born, and 25 (3%) were born elsewhere. In the analysis of 803 US, African-, Haitian-, and Jamaican-born mothers, we found that Jamaican-born mothers had a lower rate of supine sleep compared with US-born mothers (40% vs 66%; adjusted odds ratio, 0.34; 95% confidence interval, 0.18-0.63). African-born mothers had lower rates of bedsharing compared with US-born mothers (11% vs 25% adjusted odds ratio, 0.22; 95% confidence interval, 0.11-0.46). Foreign-born mothers had higher rates of any and exclusive breastfeeding, compared with US-born mothers (85% and 40% vs 23% and 13%, respectively).

CONCLUSIONS

Safe sleep and breastfeeding practices vary among US NHB mothers according to birth country. These data illustrate the importance of recognizing heterogeneity of safe sleep and breastfeeding practices within racial/ethnic groups.

Paternal Acculturation and Maternal Health Behaviors: Influence of Father's Ethnicity and Place of Birth

OBJECTIVES

Studies show disparities in maternal health behaviors according to acculturation, but whether paternal factors influence these patterns is unknown. We assessed the relationships between fathers' ethnicity and place of birth with maternal smoking during pregnancy and breastfeeding initiation overall and for 30 major ethnic groups.

MATERIALS AND METHODS

Data were from the Standard Certificate of Live Births on 1,053,096 births in Massachusetts between 1996 through 2010. We examined the concordance of maternal and paternal ethnicity and place of birth across three categories (United States-born white, United States-born Other ethnicity, and foreign-born), and then in relation to maternal smoking during pregnancy and breastfeeding initiation. Multivariable models adjusted for maternal age, marital status, education, plurality, parity, prenatal care, delivery source of payment, and year of birth.

RESULTS

United States-born white mothers were less likely to smoke during pregnancy (adjusted odds ratio [AOR] 0.66; 95% confidence interval [CI]: 0.60, 0.73) and more likely to initiate breastfeeding (AOR 1.56; 95% CI: 1.46, 1.66) if their partners were foreign-born. In contrast, foreign-born mothers whose partners were United States-born of Other ethnicity or United States-born white had a 1.65-5.12 higher odds of smoking during pregnancy and were 26%-41% less likely (AORs 0.59-0.74) to initiate breastfeeding than if their partners were also foreign-born. Results were consistent across most racial/ethnic groups.

CONCLUSIONS

Our findings offer new insight into the social pathways by which acculturation impacts maternal health behaviors and add to growing evidence that fathers are valuable to maternal health. Future efforts to understand how acculturation results in poorer maternal health behaviors should account for paternal influences.

Racial and ethnic disparities in U.S. breastfeeding and implications for maternal and child health outcomes

Marked racial and ethnic disparities exist in infant feeding in the United States. Based on a review of recent literature, this article examines current discrepancies between the 2020 Healthy People breastfeeding goals and current breastfeeding rates among women from different ethnic groups in the United States. We discuss maternal and child health outcomes associated with breastfeeding, and we review potential causes of racial and ethnic disparities in breastfeeding outcomes in the United States, especially among non-Hispanic Black, American Indian/Alaska Native, and Hispanic/Latina populations. We conclude with an overview of best practices in interventions aimed to increase U.S. breastfeeding rates, such as adoption of the baby friendly hospital initiative (BHFI) and programs that utilize peer counseling strategies to increase breastfeeding promotion and support.

Nativity, Country of Education, and Mexican-Origin Women's Breastfeeding Behaviors in the First 10 Months Postpartum

BACKGROUND

Breastfeeding is associated with numerous health benefits for the infant and mother. Latina women in the United States have historically had high overall rates of initiation and duration of breastfeeding. However, these rates vary by nativity and time lived in the United States. Exclusive breastfeeding patterns among Latina women are unclear. In this study, we investigate the current and exclusive breastfeeding patterns of Mexican-origin women at four time points from delivery to 10 months postpartum to determine the combined association of nativity and country of education with breastfeeding duration and supplementation.

METHODS

Data are from the Postpartum Contraception Study, a prospective cohort study of postpartum women ages 18-44 recruited from three hospitals in Austin and El Paso, Texas. We included Mexican-origin women who were born in either the United States or Mexico in the analytic sample (n = 593).

RESULTS

Women completing schooling in Mexico had higher rates of overall breastfeeding throughout the study period than women educated in the United States, regardless of country of birth. This trend held in multivariate models while diminishing over time. Women born in Mexico who completed their schooling in the United States were least likely to exclusively breastfeed.

DISCUSSION

Country of education should also be considered when assessing Latina women's risk for breastfeeding discontinuation. Efforts should be made to identify the barriers and facilitators to breastfeeding among US-educated Mexican-origin women to enhance existing breastfeeding promotion efforts in the United States.

Disparities in Breastfeeding: Impact on Maternal and Child Health Outcomes and Costs

OBJECTIVE

To estimate the disease burden and associated costs attributable to suboptimal breastfeeding rates among non-Hispanic blacks (NHBs), Hispanics, and non-Hispanic whites (NHWs).

STUDY DESIGN

Using current literature on associations between breastfeeding and health outcomes for 8 pediatric and 5 maternal diseases, we used Monte Carlo simulations to evaluate 2 hypothetical cohorts of US women followed from age 15 to 70 years and their infants followed from birth to age 20 years. Accounting for differences in parity, maternal age, and birth weights by race/ethnicity, we examined disease outcomes and costs using 2012 breastfeeding rates by race/ethnicity and outcomes that would be expected if 90% of infants were breastfed according to recommendations for exclusive and continued breastfeeding duration.

RESULTS

Suboptimal breastfeeding is associated with a greater burden of disease among NHB and Hispanic populations. Compared with a NHW population, a NHB population had 1.7 times the number of excess cases of acute otitis media attributable to suboptimal breastfeeding (95% CI 1.7-1.7), 3.3 times the number of excess cases of necrotizing enterocolitis (95% CI 2.9-3.7), and 2.2 times the number of excess child deaths (95% CI 1.6-2.8). Compared with a NHW population, a Hispanic population had 1.4 times the number of excess cases of gastrointestinal infection (95% CI 1.4-1.4) and 1.5 times the number of excess child deaths (95% CI 1.2-1.9).

CONCLUSIONS

Racial/ethnic disparities in breastfeeding have important social, economic, and health implications, assuming a causal relationship between breastfeeding and health outcomes.

Parent Health Literacy, Depression, and Risk for Pediatric Injury

BACKGROUND

Population-wide research on the impact of parent health literacy to children's health outcomes is limited. We assessed the relationship of low parent health literacy to a range of pediatric health risks within a large cohort of primary care patients.

METHODS

Data were from 17 845 English- and Spanish-speaking parents of children aged ≤7 years presenting for well-child care. We used a 3-item screener to measure health literacy. Outcomes included secondhand smoke exposure, asthma treatment nonadherence, parent depression, child-rearing practices, injury prevention, and parent first-aid knowledge. We summarized study variables with descriptive statistics and then performed multivariable logistic regression to identify associations between low parent literacy and our dependent measures.

RESULTS

Mean child age was 4.8 years (SD 3.7); 36.5% of parent respondents had low health literacy. In models adjusted for child gender, race/ethnicity, insurance, age, and parent language preference, low parent health literacy was related to a range of pediatric health risks, including parent depression (adjusted odds ratio [AOR] 1.32; 95% confidence interval 1.18-1.48), firearm access (AOR 1.68; 1.49-1.89), not having a working smoke detector (AOR 3.54; 2.74-4.58), and lack of first-aid knowledge about choking (AOR 1.67; 1.44-1.93) and burns (AOR 1.45; 1.29-1.63). Children of parents with low health literacy were also more likely to watch >2 hours of television per day (AOR 1.27; 1.17-1.36).

CONCLUSIONS

Low parent health literacy is independently and significantly related to parent depression, child television viewing, and at-risk family behaviors associated with child injury. Use of low-literacy approaches to health-behavior interventions may be essential to address common child morbidities.

Infant Feeding Beliefs and Day-to-Day Feeding Practices of NICU Nurses

The purpose is to examine the infant feeding beliefs and day-to-day feeding practices of NICU nurses with the goal of identifying ways to improve breastfeeding promotion.

DESIGN AND METHODS

An ethnographic approach incorporated 14 months of participant observation and interviewing. General informants consisted of 114 purposively selected NICU nurses from a northeastern, level-IV NICU, pediatric hospital. From this group, 18 nurses served as key informants. There was an average of 13 interactions with each key informant and 3.5 with each general informant. Audio taped interviews and observational field notes were gathered for descriptions of beliefs and practices. Data were coded and analyzed for patterns and themes with the aid of NUD*IST.

RESULTS

1. The nurses identified health benefits of breastfeeding, but spoke in greater detail and with more emotion about day-to-day challenges of breastfeeding in the NICU. 2. Formula feeding evoked less emotion and most nurses viewed it as safe and convenient. 3. Despite infant feeding challenges in the NICU, nurses who had breastfeeding continuing education and/or some positive experiences with breastfeeding: identified evidence based breastfeeding benefits for mothers and babies; emphasized the health-based differences between breast milk and formula; and were more committed to working through difficulties with breastfeeding.

CONCLUSIONS

Breastfeeding promotion interventions should include every NICU nurse and incorporate both evidence-based and affective components to overcome day-to-day feeding practice challenges.

PRACTICE IMPLICATIONS

Breastfeeding promotion interventions must address conflicting and emotionally evocative infant feeding beliefs of NICU nurses. Effective interventions must be integrated within the realities of bedside feeding practices.

Enteral Feeding with Human Milk Decreases Time to Discharge in Infants following Gastroschisis Repair

OBJECTIVE

To assess the effect of enteral feeding with human milk on the time from initiation of feeds to discharge after gastroschisis repair through review of a multi-institutional database.

STUDY DESIGN

Infants who underwent gastroschisis repair between 1997 and 2012 with data recorded in the Pediatrix Medical Group Clinical Data Warehouse were categorized into 4 groups based on the percentage of days fed human milk out of the number of days fed enterally. Cox proportional hazards regression modeling was performed to determine the adjusted effect of human milk on the time from initiation of feeds to discharge.

RESULTS

Among 3082 infants, 659 (21%) were fed human milk on 0% of enteral feeding days, 766 (25%) were fed human milk on 1%-50% of enteral feeding days, 725 (24%) were fed human milk on 51%-99% of enteral feeding days, and 932 (30%) were fed human milk on 100% of enteral feeding days. Following adjustment, being fed human milk on 0% of enteral feeding days was associated with a significantly increased time to discharge compared with being fed human milk on 100% of enteral feeding days (hazard ratio [HR] for discharge per day, 0.46; 95% CI, 0.40-0.52). The same was found for infants fed human milk on 1%-50% of enteral feeding days (HR, 0.37; 95% CI, 0.32-0.41) and for infants fed human milk on 51%-99% of enteral feeding days (HR, 0.51; 95% CI, 0.46-0.57).

CONCLUSION

The use of human milk for enteral feeding of infants following repair of gastroschisis significantly reduces the time to discharge from initiation of feeds.

Acculturation and Intention to Breastfeed among a Population of Predominantly Puerto Rican Women

BACKGROUND

Latinas have high overall breastfeeding initiation rates, yet Puerto Ricans have among the lowest exclusive breastfeeding rates. This study sought to determine if acculturation was associated with intent to breastfeed in a predominantly Puerto Rican population.

METHODS

A cohort of Latina women were enrolled in Proyecto Buena Salud, and provided information on infant feeding intent (n = 1,323). Acculturation was assessed via the Psychological Acculturation Scale (PAS), language preference, and generation in the United States.

RESULTS

Increasing acculturation as measured by English language preference (aOR 0.61 [95% CI 0.42-0.88]) and second or third generation in the United States (aOR 0.70 [95% CI 0.52-0.95)] was inversely associated with odds of intending to exclusively breastfeed. Similarly, women with higher levels of acculturation as measured by the PAS (aOR 0.67 [95% CI 0.45-0.99]), English language preference (aOR 0.48 [95% CI 0.33-0.70]) and second or third generation in the United States (aOR 0.42 [95% CI 0.31-0.58]) were less likely to report intent to combination feed as compared with women with lower acculturation.

CONCLUSIONS

Acculturation was inversely associated with intent to exclusively breastfeed and intent to combination feed in this predominantly Puerto Rican sample.

Predictors of breastfeeding initiation in Hong Kong and Mainland China born mothers

BACKGROUND

In recent years there has been a steady influx of immigrants into Hong Kong from Mainland China, where breastfeeding patterns differ. Studies in other regions have found substantial differences in breastfeeding rates between native-born and immigrant mothers. The purpose of this study was to examine factors associated with breastfeeding initiation in Hong Kong born and Mainland China born mothers living in Hong Kong.

METHODS

We used a multi-center cross-sectional study design and recruited 2761 new mothers from the postnatal wards of all eight public hospitals in Hong Kong that offer obstetric services. We assessed breastfeeding status as well as various socio-demographic, maternal and birth characteristics. Chi-square tests and multivariable logistic regression were used to identify the predictors of breastfeeding initiation in Hong Kong born and Mainland China born participants.

RESULTS

80.3 % of Hong Kong and 81.1 % of Mainland Chinese born women initiated breastfeeding. In the fully adjusted models, multiparity (Odds Ratio [OR] 0.53, 95 % CI 0.43-0.66) and maternal smoking (OR 0.29, 95 % CI 0.18-0.45) were strongly associated with failure to initiate breastfeeding in both Hong Kong and Mainland China born participants. In Hong Kong born mothers, participants with lower maternal education and those who had a cesarean section were significantly less likely to breastfeed. For Mainland China born mothers, paternal smoking (OR 0.70, 95 % CI 0.49-0.99) and having a pregnancy-related health problem (OR 0.60, 95 % CI 0.38-0.94) were both additional risk factors for not breastfeeding.

CONCLUSION

This study has identified predictors of breastfeeding initiation in Hong Kong and Mainland China born mothers. Given the current high breastfeeding initiation rates among both groups, antenatal breastfeeding education and promotion programmes need to specifically intervene with sub-groups of pregnant women at risk for not breastfeeding so that their efforts are more strategic and cost-effective.

Breastfeeding practices in relation to country of origin among women living in Denmark: a population-based study

The objective of this study was to describe breastfeeding practices and to compare the risk of suboptimal breastfeeding of women living in Denmark according to country of origin, and further to examine how socio-economic position and duration of stay in the country affected this risk. Information on breastfeeding of 42,420 infants born 2002–2009 and living in eighteen selected Danish municipalities was collected from the Danish Health Visitor’s Child Health Database. The data was linked with data on maternal socio-demographic information from Danish population-covering registries. Suboptimal breastfeeding was defined as <4 months of full breastfeeding as described by the Danish Health and Medicines Authority. We used logistic regression to model the crude associations between suboptimal breastfeeding and country of origin, and taking maternal age and parity, and a variety of parental socio-economic measures into account. Suboptimal breastfeeding was more frequent among non-Western migrant women than among women of Danish origin. Women who were descendants of Turkish and Pakistani immigrants had a higher risk of suboptimal breastfeeding as compared to the group of women who had migrated from the same countries, suggesting that acculturation did not favor breastfeeding. For all but the group of women who had migrated from Pakistan, adjustment for socio-demographic indicators (age, parity, education, attachment to labour market, and income) eliminated the increased risk of suboptimal breastfeeding. There was no evidence for differences in the breastfeeding support provided at hospital level according to migrant status. Suboptimal breastfeeding was more frequent among women who were non-Nordic migrants and descendants of migrants than among women with Danish origin.

The Association of Low Social Support with Breast Milk Expression in Low-Income Mother-Preterm Infant Dyads

BACKGROUND

Premature infants benefit from receiving expressed breast milk (BM), but expressing breast milk is difficult for new mothers. Little is known about mothers' social support and BM expression during the premature infant's hospital stay.

OBJECTIVE

We examined whether low maternal social support was associated with breast milk expression initiation and low breast milk expression among low-income mothers of premature infants.

METHODS

Maternal intake interview data and daily infant data on proportion of nutrition from BM during hospitalization were analyzed from a larger randomized trial testing a developmental intervention on 181 mother-premature infant dyads with at least 2 of 10 social-environmental risks. Multivariable modified Poisson regression was used to examine the relationship between social support (Personal Resources Questionnaire 2000; dichotomized as low for lowest quartile), initiation (any breast milk expressed vs none), and low breast milk expression (if BM was < 30% of infant total milk/formula intake during hospitalization).

RESULTS

Breast milk expression was initiated by 70.2% of mothers, and 32.3% of those mothers had low breast milk expression. In adjusted multivariable analyses, social support did not relate to the initiation of breast milk expression but was significantly associated with low breast milk expression among mothers who initiated (adjusted relative risk = 1.57; 95% confidence interval, 1.00-2.47).

CONCLUSION

Low social support was not associated with initiation but was associated with low breast milk expression during hospitalization. Interventions to enhance social support for mothers of premature infants, especially those reporting low social support from family and friends, may increase in-hospital expression and long-term breastfeeding.