Migration and mental health: the case of postpartum depressive symptoms in Portugal

Abstract Background Postpartum depression (PPD) affects about 17% of healthy mothers within one year of childbirth. The etiology remains unknown, but PPD is influenced by a combination of genetic, physical, psychosocial, and obstetric factors, migration could influence the risk. Methods We analyzed data collected within the scope of baMBINO (Perinatal Health in Migrants: Barriers, Incentives, and Outcomes), a Portuguese prospective cohort study, aimed to investigate the maternity experiences and outcomes of migrant women, defined as foreign-born women, and compared to native women. Among the 5431 women enrolled at delivery, 3006 (55%) were considered eligible for this study and interviewed in their preferred language, within six months of recruitment. The Edinburgh Postnatal Depression Scale (EPDS) was administered during this interview, along with the Migrant-Friendly Maternity Care Questionnaire (MFMCQ). Results 2890 (96%) women were included in the analytical sample for this study. Among women included, 1475 (51%) were migrants or refugees. The proportions of women having EPDS scores ≥ 10 were overall greater among migrants than among native women (7.2% vs. 12.4%, p < 0.001) and the risk remained higher after multiple adjustment models. Conclusions Migration status, poor experience with maternal care and language proficiency increased the risk of PPDS and should be carefully addressed as part of perinatal care.