Sources of health financing and health outcomes: A panel data analysis
研究使用三重差分法分析公共和私人健康支出对健康结果的不同影响，发现私人支出在政府效率低的国家效果更好，但在政府效率高的国家两者无显著差异。
We study the differential impacts of public and private sources of health spending on health outcomes using a triple difference approach. We find that private health spending has on average a higher health-promoting effect than public health spending. This result is robust with respect to the choice of outcome measure and covariates in the regression and driven primarily by the countries with ineffective governments. Once we restrict our sample to countries with effective governments, private health spending is found to be no better than public health spending in improving the health outcome.