Progress in Health around the World
探讨了健康的测量方法，发现预期寿命是人口健康的合理代理指标，并指出全球健康虽有改善，但各国围绕不同长期稳态形成两个明显聚类，许多国家在无收入增长先导下实现了健康进步。
Abstract Health is a key component of human development. This article looks at how health is measured, and the convergence of health across countries. We argue that health measures should account for illness as well as mortality, but in practice life expectancy is a reasonable proxy for population health. While health is improving we see two distinct groups of countries in the data, clustering around different long run steady states. Many countries have experienced large health gains without prior income gains and in countries not affected by HIV/AIDS the last 40 years have been a success story in terms of health.