How Much of Cross-Country Income Variation is Explained by Health?
使用发展核算方法，从微观数据出发评估健康对跨国人均收入差异的贡献，发现贫血解释1.3%的收入对数方差，成人存活率解释19%，后者约占其他要素积累未解释部分的1/3。
We use development accounting techniques to assess the contribution of health to differences in income per capita among countries. Rather than rely on regressions in aggregate data, we build up estimates of the effect of health starting from microeconomic data. We examine both a particular condition, anemia, and a proxy for general health, the adult survival rate. We find that differences in anemia explain 1.3 percent of the log variance of income per capita, and that differences in adult survival explain 19 percent of the log variance of income per capita. The latter figure is almost one third of the variation in output that is left unexplained by other measures of factor accumulation.