Male Sex Associated With Increased Risk of Neonatal Abstinence Syndrome

BACKGROUND: Neonatal abstinence syndrome (NAS) is a postnatal opioid withdrawal syndrome. Factors associated with development of the syndrome are poorly understood; however, infant sex may influence the risk of NAS. Our objective was to determine if infant sex was associated with the development or severity of the syndrome in a large population-based cohort. METHODS: This retrospective cohort study used vital statistics and prescription,...