The prevalence of opioid use disorder among pregnant women hospitalized for delivery increased more than fourfold from 1999 to 2014, according to an analysis in MMWR.
Using Agency for Healthcare Research and Quality data, researchers examined rates of opioid use disorder at delivery in some 30 states over the 16-year period. The disorder was diagnosed in 1.5 per 1000 delivery hospitalizations in 1999, rising to 6.5 per 1000 in 2014. Increases were seen in all states with available data. California had the smallest annual increase, while Maine, New Mexico, Vermont, and West Virginia had the largest.