Use of opioids during pregnancy and effects of pregnancy outcomes

To evaluate the use of opioids in pregnant primiparous women and study the effect of opioid use on maternal and offspring delivery outcomes.The study cohort (N = 6231) consists of all primiparous women with a Finnish background who delivered a singleton between 2009 and 2015 in the city of Vantaa, Finland. Data on births, maternal characteristics, pregnancy outcomes, and purchases of prescription drugs were obtained from National Health...