Laine K, et al. - Intrapartum epidural use during vaginal delivery among immigrant women giving birth in Norway vs Norwegian born women was determined. Associations between epidural use and other maternal characteristics, fetal and obstetrical variables were examined. Researchers conducted a population-based cohort study including data of 602,095 deliveries in 1999-2014 from Norwegian Medical Birth Registry and Statistics Norway. Women born in different parts of the world differ significantly in epidural use. Among nulliparous women, women born in Latin America vs Norwegian born women showed increased odds for intrapartum epidural use, even after adjustment for maternal, fetal and obstetrical factors. Nulliparous women born in Sub-Saharan Africa, East Asia and Pacific area, and women with unknown country of birth showed reduced odds for intrapartum epidural use vs Norwegian born women. Further, parous women from Latin America, Sub-Saharan Africa, East-Asia and Pacific area, unknown country of birth exhibited the similar pattern. The odds for use of intrapartum epidural analgesia increases in correlation with maternal hypertensive disorders, high infant birthweight, stillbirth, breech presentation and operative vaginal delivery.