Inequality decomposition by population subgroups for ordinal data
Inequality decomposition by population subgroups for ordinal data
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DOI：
10.1016/j.jhealeco.2011.11.005
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发表时间：
2012-01-01
影响因子：
3.5
通讯作者：
Milos, Piotr
中科院分区：
文献类型：
--
作者：
Kobus, Martyna;Milos, Piotr
我们提出了一类有序数据的可分解不平等指数（例如自我报告的健康调查）。它的特点是众所周知的不等式公理（例如尺度不变性）和可分解性公理，该公理指出指数可以表示为子组中不等式值和子组大小的函数。唯一可分解的指数是类别中频率的加权平均值的严格单调变换。在文献提出的指数中，只有绝对值指数（Abul Naga 和 Yalcin，2008：Apouey，2007）是可分解的。作为实证说明，我们计算了瑞士总体健康不平等的区域贡献。 (C) 2011 Elsevier B.V. 保留所有权利。
We present a class of decomposable inequality indices for ordinal data (e.g. self-reported health survey). It is characterized by well-known inequality axioms (e.g. scale invariance) and a decomposability axiom which states that an index can be represented as a function of inequality values in subgroups and subgroup sizes. The only decomposable indices are strictly monotonic transformations of the weighted average of frequencies in categories. Among the indices proposed in the literature only the absolute value index (Abul Naga and Yalcin, 2008: Apouey, 2007) is decomposable. As an empirical illustration we calculate regional contributions to overall health inequality in Switzerland. (C) 2011 Elsevier B.V. All rights reserved.