A cluster randomized controlled trial was undertaken, testing two sets of interventions to encourage enrollment in the Philippines' Individual Payer Program. Of 243 municipalities, 179 were randomly assigned as intervention sites and 64 as controls. In early 2011, 2,950 families were interviewed;...

Results from the Philippine Quality Improvement Demonstration Study show that a policy that expands insurance coverage improves quality of care, as measured by clinical performance vignettes, among public physicians, and induces a spillover effect that improves quality among private physicians.

To explain divergent physician practices, studies focus on either differences in education and training or in financial incentives. The policy challenge is to identify the most cost-effective interventions to encourage adherence to practice guidelines. Utilizing private physician data in major...