Document Detail

Role of body mass index and gestational weight gain in breastfeeding outcomes.
MedLine Citation:
PMID:  23215909     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: This study determined whether high maternal prepregnancy body mass index (BMI) and/or excess gestational weight gain (GWG) is associated with reduced breastfeeding duration and earlier formula supplementation.
STUDY DESIGN: A prospective longitudinal cohort of postpartum women (n=718), who were a subset of a larger randomized trial, was followed for 6 months postdelivery. We evaluated the relationship between BMI or BMI/GWG groups and timing of breastfeeding cessation and introduction of formula using Kaplan-Meier curves and log-rank tests. Then, we used multivariable Cox proportional hazards models to evaluate the relationship between BMI and BMI/GWG on these breastfeeding outcomes after controlling for potential confounding variables.
RESULTS: The expected relationships between high BMI and high BMI/GWG and poor breastfeeding outcomes were observed in Kaplan-Meier curves. However, after adjusting for relevant maternal and infant covariates in the Cox models, the differences became nonsignificant. Prepregnancy BMI category was not statistically associated with breastfeeding duration (p=0.06) or timing of formula introduction (p=0.15). Similarly, BMI and GWG in combination were not associated with duration (p=0.33) or timing of formula introduction (p=0.18). Mothers' intended breastfeeding duration and rating of the importance of breastfeeding remained the only significant modifiable predictors of breastfeeding outcomes in the final models.
CONCLUSIONS: Maternal BMI and GWG were not significantly associated with breastfeeding outcomes after adjusting for confounding variables. Mothers' plans for breastfeeding duration and the importance mothers assign to breastfeeding remain the optimal intervention points for lengthening breastfeeding duration and reducing formula supplementation.
Cynthia J Bartok; Eric W Schaefer; Jessica S Beiler; Ian M Paul
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.     Date:  2012-06-25
Journal Detail:
Title:  Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine     Volume:  7     ISSN:  1556-8342     ISO Abbreviation:  Breastfeed Med     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-10     Completed Date:  2013-05-16     Revised Date:  2013-12-04    
Medline Journal Info:
Nlm Unique ID:  101260777     Medline TA:  Breastfeed Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  448-56     Citation Subset:  IM    
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MeSH Terms
Body Mass Index
Breast Feeding* / statistics & numerical data
Health Behavior*
Infant, Newborn
Kaplan-Meier Estimate
Multivariate Analysis
Proportional Hazards Models
Prospective Studies
Risk Factors
Time Factors
Weight Gain*
Grant Support
R40 MC 06630//PHS HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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