Does midwifery continuity of care make a difference to women with perinatal mental health conditions: A cohort study, from Australia

Abstract

BackgroundPerinatal mental health (PMH) conditions are associated with an increased risk of adverse perinatal outcomes including preterm birth. Midwifery caseload group practice (continuity of care, MCP) improves perinatal outcomes including a 24 % reduction of preterm birth. The evidence is unclear whether MCP has the same effect for women with perinatal mental health conditions. AimTo compare perinatal outcomes in women with a mental health history between MCP and standard models of maternity care. The primary outcome measured the rates of preterm birth. MethodsA retrospective cohort study using routinely collected data of women with PMH conditions between 1st January 2018 – 31st January 2021 was conducted. We compared characteristics and outcomes between groups. Multivariate logistic regression models were performed adjusting for a-priori selected variables and factors that differ between models of care. ResultsThe cohort included 3028 women with PMH, 352 (11.6 %) received MCP. The most common diagnosis was anxiety and depression (n = 723, 23.9 %). Women receiving MCP were younger (mean 30.9 vs 31.3, p = 0.03), Caucasian (37.8 vs 27.1, p < 0.001), socio-economically advantaged (31.0 % vs 20.2, p < 0.001); less likely to smoke (5.1 vs 11.9, p < 0.001) and with lower BMI (mean 24.3 vs 26.5, p < 0.001) than those in the standard care group. Women in MCP had lower odds of preterm birth (adjOR 0.46, 95 % CI 0.24–0.86), higher odds of vaginal birth (adjOR 2.55, 95 % CI 1.93–3.36), breastfeeding at discharge (adj OR 3.06, 95 % CI 2.10–4.55) with no difference in severe adverse neonatal outcome (adj OR 0.79, 95 % CI 0.57–1.09). ConclusionsThis evidence supports MCP for women with PMH. Future RCTs on model of care for this group of women is needed to establish causation.