Estimating the Effect of Income on Health and Mortality Using Lottery Prizes as an Exogenous Source of Variation in Income
利用彩票奖金作为收入的外生变动，发现收入增加确实能改善健康，且效果与传统估计方法相近：收入增加10%可使健康改善约4-5%的标准差。
A vast literature has established a strong positive relation between income and health status and a negative relation with mortality. This paper studies the effects of income on health and mortality, using only the part of income variation due to a truly exogenous factor: monetary lottery prizes of individuals. The findings are that higher income causally generates good health and that this effect is of a similar magnitude as when traditional estimation techniques are used. A 10 percent income increase improves health by about 4–5 percent of a standard deviation.