Association of Postpartum Predischarge Depot-Medroxyprogesterone Acetate with In-Hospital Breastfeeding Initiation

Objective: The primary aim of this study was to examine the association between postpartum predischarge depot-medroxyprogesterone acetate (ppDMPA) and in-hospital breastfeeding initiation, and the secondary exploratory aim was to determine if any racial disparities are associated with ppDMPA receipt or its relationship to breastfeeding initiation. Materials and Methods: We conducted a cross-sectional retrospective chart review of maternal and newborn records at a large urban academic medical center. Variables extracted included in-hospital feeding choice, obstetrical and sociodemographic variables, infant characteristics, and ppDMPA receipt. The association of ppDMPA and maternal-child characteristics with breastfeeding initiation was examined using logistic regression analysis. Results: Among singleton live births of 919 mother-infant pairs (76.5% African American [AA]), 67% initiated breastfeeding (34% exclusive and 33% mixed) and 31.4% received ppDMPA. Breastfeeding rates differed significantly between AA (60.7%) and non-AA mothers (86.6%), and ppDMPA also differed significantly between AA (37.6%) and non-AA mothers (11.6%). Adjusting for other independent predictors, mothers who received ppDMPA were 1.5 times more likely not to initiate breastfeeding if AA, and 5.2 times more likely not to initiate breastfeeding if non-AA. Conclusions: ppDMPA receipt was independently associated with decreased rates of breastfeeding initiation. Although more AA mothers received ppDMPA than non-AA, the association of ppDMPA with breastfeeding noninitiation was stronger in non-AA than in AA mothers. Future research should examine this question prospectively to ascertain if there is a cause-effect relationship and should address both physiological effects and social perceptions.