题目：What is in “Moral Hazard”? Evidence from Quasi Experiments in China？

主讲人：黄炜

讲座时间：2019年12月16日上午9:00—10:00

讲座地点：经管院C372

主办单位：

    珞珈青年经济论坛

    武汉大学经济发展研究中心

    经济评论编辑部

    经济学系

讲座主要内容：Exploring two different natural experiments in urban China, we use administrative data with more than 3 million observations to estimate price elasticity and income elasticity of healthcare utilization. First, we exploit a sharp reduction in inpatient cost sharing at age 80 in one city, using a regression discontinuity design (RDD) to examine its effect on utilization. The price elasticity of inpatient care usage ranges from -0.15 to -0.32. The effects are larger for poorer population and for chronic diseases. Second, we explore the timing of pension increases in different years, using an event study approach to estimate the impacts on healthcare usage. Among the same population, we find an income elasticity of inpatient care usage ranging from 1.3-2.0, which suggests 40-60 percent of moral hazard is overestimated because of income effect. For the poorer population, about 50-70 percent could be explained by income effect. Finally, the reduced cost sharing is associated with significantly lower out-of-pocket expenditure but has little impact on mortality.

主讲人简介：黄炜，新加坡国立大学校长特聘助理教授，美国国家经济研究局（NBER）博士后研究员。哈佛大学经济学博士学位，北京大学经济学硕士和物理学学士。他的研究领域是公共经济学，劳动经济学和卫生经济学。他的研究成果已发表在Review of Economic and Statistics, Journal of Labor Economics, American Economic Journal: Applied Economics, Nature, Journal of Economic Perspectives,管理世界等国内外期刊。2018年起，他担任Economics of Transition的联合主编。