Affluence and Food: A Simple Way to Infer Incomes
利用恩格尔定律的倒数形式，通过食物支出占比来推断国家真实收入，对100多个国家的数据分析表明该方法可行，并以随机比较形式呈现结果。
Accurate and timely measures of cross‐country real incomes are still a rarity. As the share of expenditure devoted to food is readily available, we use Engel's law in reciprocal form to measure affluence. Analysis of real income data for over 100 countries indicates that this approach is viable. To recognize the role of uncertainty in the analysis, we present the results in the form of stochastic cross‐country income comparisons.