Investigating membership attrition dynamics in community-based health insurance: a survival analysis of socioeconomic and program-specific determinants in the Amhara Region, Northwest Ethiopia

Dropout rates peak in the early years of membership and increase over time. Enrolling in safety nets and having smaller land sizes enhanced retention rates, while extensive landholdings and being classified as Lower-Middle Income led to higher dropout rates; however, ownership of modern amenities had minimal impact on retention. Perceived healthcare quality and financial protection significantly influence CBHI retention, while program service quality has little effect, underscoring the need for policies that prioritize improving service quality, accessibility, and affordability.