Smoking and Race Associated with Decreased Breastfeeding Initiation and Duration Among a Low Income Population

To assess associations between smoking behaviors during pregnancy and postpartum and breastfeeding initiation and duration, among DC Women, Infants, and Children (WIC) recipients, the majority of whom are non-White, controlling for sociodemographic factors, low birth weight (LBW), and delivery in a Baby-Friendly hospital (BFH). A series of ordinary least squares and logistic regressions estimated the association between smoking during pregnancy and postpartum on breastfeeding initiation and duration, respectively. A multilevel modeling approach accounted for WIC site effects. Overall, 8.8% of DC WIC recipients smoked during pregnancy. Smoking during pregnancy and postpartum was negatively associated with breastfeeding initiation (adjusted odds ratio [aOR] = 0.47, 95% confidence interval [CI]: 0.36, 0.61) and duration (adjusted coefficient [B] = -37.96, 95% CI: -62.92, -13.00) in adjusted models, respectively. Maternal age, race, marital status, LBW, and delivery in a BFH were also significantly associated with initiation, while age, race, and marital status were significantly associated with duration. Likewise, the number of cigarettes smoked per day was negatively associated with initiation (aOR = 0.79, 95% CI: 0.72, 0.87) and duration (B = -8.98, 95% CI: -15.55, -2.41) in adjusted models. Both smoking and number of cigarettes smoked during pregnancy and postpartum are significant factors associated with less breastfeeding in the DC WIC population. Furthermore, smoking cessation during pregnancy shows initial promise to increase breastfeeding initiation. Future research is needed to better understand the role of smoking, relapse, and cessation interventions on breastfeeding rates among low-income, predominantly minority populations.