Conclusions
In this nationwide population-based study, immigrant women from sub-Saharan Africa, and especially Ethiopia, had an increased incidence of placental abruption after immigration to Norway. We did not find much variation in placental abruption incidence by reason for immigration or length of residence. Our results are important for maternity caregivers, who support women to achieve a healthy lifestyle and optimization of nutrition during pregnancy, as well as provide targeted information on early signs of abruption for immigrant women from sub-Saharan Africa, especially Ethiopia during pregnancy.