We launched Chamas for Change (Chamas), a group-based health education and microfinance program for pregnant women and their infants, to address inequities contributing to high rates of maternal and neonatal mortality in western Kenya. In this prospective matched cohort study, we evaluated Chamas' impact on improving uptake of evidence-based maternal, newborn and child health (MNCH) interventions. Methods We prospectively compared MNCH intervention uptake between a cohort of Chamas participants

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... and controls matched for age, parity, and prenatal care location. Between October-December 2012, government-sponsored community health volunteers (CHV) recruited pregnant women in Busia county attending their first antenatal care (ANC) visit to participate in Chamas and enroll in this study. Upon joining, women agreed to attend bi-monthly group health education and optional microfinance sessions for 12 months. We selected controls among non-Chamas participants who attended the same ANC clinics. We collected baseline sociodemographic and reproductive health data at study enrollment. We used descriptive analyses and adjusted multivariable logistic regression models to compare outcomes across cohorts at 6-12 months postpartum, with α set to 0.05. Results Compared to controls (n=115), a significantly higher proportion of Chamas participants (n=211) delivered in a facility with a skilled birth attendant (84.4% vs. 50.4%, p<0.001), attended at least four ANC visits (64.0% vs. 37.4%, p<0•001), exclusively breastfed to six months (82.0% vs. 47.0%, p<0•001), and received a CHV home visit within 48 hours postpartum (75.8% vs. 38.3%, p<0•001). In our adjusted models, Chamas participants were nearly five times as likely as controls to deliver in a health facility (OR 5.07, 95% CI