Social support modifies the association between pre-pregnancy body mass index and breastfeeding initiation in Brazil

Abstract

BackgroundMany biological, social and cultural barriers for suboptimal breastfeeding practices have been identified in literature. Among these, excessive pre-pregnancy weight has been identified as a risk factor for not initiating breastfeeding early. Social support, coming from social networks (e.g. a partner, family or friends) or health care providers, has been positively associated with breastfeeding. This study aimed to examine the association between prepregnancy excessive weight and breastfeeding within the first hour after birth and if social support modifies this association. DesignNational population-based study conducted with 21,086 postpartum women from February 1, 2011 to October 31, 2012 in 266 hospitals from all five regions of Brazil. Social support was defined as having a companion at the hospital. Main effects and interactions were tested with multivariable regression analyses. ResultsMultivariate regression analyses indicated that class I and class II obese women had lower odds of breastfeeding within the first hour when a companion was not present (AOR = 0.59, 95% CI 0.42-0.82 and AOR = 0.59, 95% CI 0.36-0.97, respectively), but there was no association when the companion was present. Among overweight and obese women, the predicted probability of breastfeeding within the first hour was lower for those without a companion. This association was not found among those with normal pre-pregnancy BMI.

Breastfeeding Practices and Problems Among Obese Women Compared with Nonobese Women in a Brazilian Hospital

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