Objectives: Among opioid-exposed newborns, breastfeeding is associated with less severe withdrawal signs, yet breastfeeding rates remain low. We determined the extent to which hospital, maternal, and infant characteristics are associated with breastfeeding initiation and continuation among opioid-exposed dyads.
Materials and methods: We examined breastfeeding initiation and continuation until infants' discharge among opioid-exposed dyads from 2006 to 2016. Among dyads meeting hospital breastfeeding guidelines, we assessed hospital (changes in breastfeeding guidelines and improvement initiatives [using delivery year as a proxy]), maternal (demographics, comorbid conditions, methadone versus buprenorphine treatment, and delivery mode), and infant (gestational age and birth weight) characteristics. We used multivariable logistic regression to examine independent associations of characteristics with breastfeeding initiation and continuation.
Results: Among 924 opioid-exposed dyads, 61% (564) met breastfeeding criteria. Overall, 50% (283/564) of dyads initiated and 33% (187/564) continued breastfeeding until discharge. Breastfeeding initiation and continuation rates increased from 38% and 8% in 2006, to 56% and 34% in 2016, respectively. In adjusted models, infants born after reducing restrictions in hospital breastfeeding guidelines and prenatal breastfeeding education (adjusted odds ratio, aOR 2.6 [95% confidence interval, CI 1.5-4.5]) had increased odds of receiving any maternal breast milk versus infants born with earlier hospital policies. Cesarean versus vaginal delivery (aOR 0.3 [95% CI 0.2-0.6]) and length of infant hospitalization (aOR 0.94 [95% CI 0.92-0.97]) were negatively associated with breastfeeding continuation.
Conclusions: Despite increasing breastfeeding rates among opioid-exposed dyads, rates remain suboptimal. Hospital-level factors were the greatest predictor of breastfeeding initiation. The findings suggest that changes in hospital guidelines and initiatives can impact breastfeeding initiation among this vulnerable population.
Keywords: breastfeeding; initiation and continuation; neonatal abstinence syndrome; opioid-exposed; perinatal substance use.