Pregnancy and Birth Complications and Long-Term Maternal Mental Health Outcomes: A Systematic Review and Meta-Analysis.

BACKGROUND:Few studies have examined the associations between pregnancy and birth complications and long-term (>12 months) maternal mental health outcomes.OBJECTIVES:To review the published literature on pregnancy and birth complications and long-term maternal mental health outcomes.SEARCH STRATEGY:Systematic search of Cumulative Index to Nursing and Allied Health Literature (CINAHL), Excerpta Medica Database (Embase), PsycInfo®, PubMed® and Web of Science from inception until August 2022.SELECTION CRITERIA:Three reviewers independently reviewed titles, abstracts and full texts.DATA COLLECTION AND ANALYSIS:Two reviewers independently extracted data and appraised study quality. Random-effects meta-analyses were used to calculate pooled estimates. The Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines were followed. The protocol was prospectively registered on the International Prospective Register of Systematic Reviews (PROSPERO: CRD42022359017).MAIN RESULTS:Of the 16 310 articles identified, 33 studies were included (3 973 631 participants). Termination of pregnancy was associated with depression (pooled adjusted odds ratio, aOR 1.49, 95% CI 1.20-1.83) and anxiety disorder (pooled aOR 1.43, 95% CI 1.20-1.71). Miscarriage was associated with depression (pooled aOR 1.97, 95% CI 1.38-2.82) and anxiety disorder (pooled aOR 1.24, 95% CI 1.11-1.39). Sensitivity analyses excluding early pregnancy loss and termination reported similar results. Preterm birth was associated with depression (pooled aOR 1.37, 95% CI 1.32-1.42), anxiety disorder (pooled aOR 0.97, 95% CI 0.41-2.27) and post-traumatic stress disorder (PTSD) (pooled aOR 1.75, 95% CI 0.52-5.89). Caesarean section was not significantly associated with PTSD (pooled aOR 2.51, 95% CI 0.75-8.37). There were few studies on other mental disorders and therefore it was not possible to perform meta-analyses.CONCLUSIONS:Exposure to complications during pregnancy and birth increases the odds of long-term depression, anxiety disorder and PTSD.