LAUSR

INTRODUCTION Enhanced prenatal/postnatal care home visiting programs for Medicaid-insured women have significant positive impacts on care and health outcomes. However, enhanced prenatal care participation rates are typically low, enrolling <30% of eligible women. This study investigates the impacts of a population-based systems approach on timely enhanced prenatal care participation and other healthcare utilization. METHODS This quasi-experimental, population-based, difference-in-differences study used linked birth certificates, Medicaid claims, and enhanced prenatal care data from complete statewide Medicaid birth cohorts (2009 to 2015), and was analyzed in 2019-2020. The population-based system intervention included cross-agency leadership and work groups, delivery system redesign with clinical-community linkages, increased enhanced prenatal care-Community Health Worker care, and patient empowerment. Outcomes included enhanced prenatal care participation and early participation, prenatal care adequacy, emergency department contact, and postpartum care. RESULTS Enhanced prenatal care (7.4 percentage points, 95% CI=6.3, 8.5) and first trimester enhanced prenatal care (12.4 percentage points, 95% CI=10.2, 14.5) increased among women served by practices with established clincial-community linkages, relative to that among the comparator group. First trimester enhanced prenatal care improved in the county (17.9, 95% CI=15.7, 20.0), emergency department contact decreased in the practices (-11.1, 95% CI= -12.3, -9.9), and postpartum care improved in the county (7.1, 95% CI=6.0, 8.2). Enhanced prenatal care participation for Black women served by the practices improved (4.4, 95% CI=2.2, 6.6) as well as early enhanced prenatal care (12.3, 95% CI=9.0, 15.6) and use of postpartum care (10.4, 95% CI=8.3, 12.4). CONCLUSIONS A population systems approach improved selected enhanced prenatal care participation and service utilization for Medicaid-insured women in a county population, those in practices with established clinical-community linkages, and Black women.