The Demand for Health Insurance in a Poor Economy: Evidence from Burkina Faso
研究了布基纳法索贫困家庭对健康保险的需求，发现城市家庭价格弹性大而农村家庭缺乏弹性，非正规风险分担挤出了正规保险，且未发现逆向选择。
We investigate the properties of health insurance demand in Burkina Faso, where we offered poor households a voluntary health insurance product at half the usual price. The targeting procedure we implemented delivers a fuzzy regression discontinuity design, which identifies the price elasticity of demand for health insurance as well as associated selection effects. We find large price elasticities among urban households, whereas the demand of rural households is price inelastic. There are important selection effects, with widowed male household heads being most price sensitive. Correlating these heterogeneous effects with survey data on informal transfers and health expenditures, our results suggest that informal risk sharing largely crowds out formal insurance and that a single insurance product may fail to align with poor households’ small health budgets. We find no adverse selection into health insurance.