Patterns of peripartum depression screening and detection in a large, multi-site, integrated healthcare system.

The purpose of this study was to examine peripartum depression (PD) screening patterns within and across the prenatal and postpartum periods and assess the incidence of new positive screens during standard screening protocol timepoints to inform practice, particularly when limited screenings can be conducted.This is a retrospective observational study of women screened for PD through a large, integrated health system using the Edinburgh Postnatal Depression Scale (EPDS) within their obstetrics and pediatric practices. Pregnancies with an EPDS score for at least one obstetric and one pediatric appointment between November 2016 and October 2019 were included (n = 3240). The data were analyzed using chi-squared test, Student's t-test, and binary logistic regression analyses. An EPDS score of 10 or higher was considered a positive screen.The positive screening rate for this cohort was 18.5%, with a prenatal positive rate of 9.9% and a postpartum positive rate of 8.6%. Single relationship status showed a higher rate of PD overall. Two thirds of women were not screened until their third trimester, resulting in delayed detection for an estimated 28% of women who ultimately screened positive. Few new positive screens (1.3%) were detected after 9 weeks postpartum in women who had completed all recommended prior screens.Obstetric providers should screen for PD as early in pregnancy as possible and continue to screen as often as feasible regardless of previous negative EPDS scores. Prioritizing screening more often in pregnancy and before 9 weeks postpartum is optimal to avoid delays in detection and intervention.