The effect of maternity practices on exclusive breastfeeding rates in U.S. hospitals.

The Baby-friendly Hospital Initiative (BFHI) includes a set of 10 evidenced-based maternity practices that when used together have been shown to improve breastfeeding outcomes. In 2007, the Centers for Disease Control and Prevention launched the Maternity Practices in Infant Nutrition and Care (mPINC) survey to assess and monitor these and other evidenced-based maternity practices. The purpose of this study was to explore individual maternity practices measured in the 2013 mPINC survey, along with hospital demographic information, and their relationships with exclusive breastfeeding (EBF) rates, using a sample of United States (U.S.) hospitals. We obtained mPINC survey data from 69 BFHI hospitals and 654 non-BFHI hospitals in the U.S., and EBF rates from The Joint Commission, a leading hospital accreditation agency. On the basis of linear regression analysis, we found that most maternity practices studied were significantly associated with EBF rates (max adjusted R2  = 14.9%). We found a parsimonious model with an adjusted R2 of 47.3%. This study supports the need for a systematic approach in providing breastfeeding support as no one maternity care practice was able to explain the variability in EBF rates as well as a collection of maternity care practices.