Narrow hospital networks have proliferated in health systems with managed care. We investigate the causal effect of network breadth on mortality leveraging the termination of the largest health insurer in Colombia. The termination caused a substantial increase in mortality accompanied by...

Health-care systems that rely on hospitalization for early patient treatment pose a financial concern for governments. In this article, the author suggests a hospitalization prevention program in which the decision of whether to intervene on a patient depends on a simple decision model and the...

Risk adjustment is vital in health policy design. Risk adjustment defines the annual capitation payments to health insurers and is a key determinant of insolvency risk for health insurers. In this study we compare the current risk adjustment formula used by Colombia's Ministry of Health and...