Ordinal and cardinal measures of health inequality: an empirical comparison
比较了基于序数数据的健康不平等指数与将序数数据转换为基数数据后使用的标准指数，发现排名对指数类型选择敏感，但对分布不同部分的权重选择不敏感。
When measuring health inequality using ordinal data, analysts typically must choose between indices specifically based upon ordinal data and more standard indices using ordinal data, which has been transformed into cardinal data. This paper compares inequality rankings across a number of different approaches and finds considerable sensitivity to the choice between ordinal- and cardinal-based indices. There is relatively little sensitivity to the ethical choices made by the analyst in terms of the weight attached to different parts of the distribution.