Placental abruption in immigrant women in Norway: A population‐based study

Introduction Placental abruption is a serious complication in pregnancy. Its incidence varies across countries, but the information of how placental immigrant populations limited. The aims this study were to estimate women compared with non-immigrants by maternal country and region birth, reason for immigration, length residence. Material methods We conducted nationwide population-based using data from Medical Birth Registry Norway Statistics (1990-2016). sample included 1 558 174 pregnancies, which accounted 245 887 pregnancies 312 287 non-immigrants. Crude adjusted odds ratios 95% CI estimated logistic regression robust standard error estimations (accounting within-mother clustering). Adjustment variables year age, parity, multiple chronic hypertension, level education. Results decreased during period both immigrants (from 0.68% 0.44%) 0.80% 0.34%). Immigrant sub-Saharan Africa had an ratio 1.35 (95% 1.15-1.58) abruption, whereas Ethiopia 2.39 1.67-3.41). found small variation other countries or regions residence, immigration. Conclusions Africa, especially Ethiopia, have increased when giving birth Norway. Reason immigration residence little impact on abruption.