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J Health Econ. 2009 Mar;28(2):504-15. doi: 10.1016/j.jhealeco.2008.02.003. Epub 2008 Feb 16.

Correcting the concentration index.

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  • 1Department of Economics, University of Antwerp, City Campus, Prinsstraat 13, 2000 Antwerpen, Belgium. guido.erreygers@ua.ac.be

Abstract

In recent years attention has been drawn to several shortcomings of the Concentration Index, a frequently used indicator of the socioeconomic inequality of health. Some modifications have been suggested, but these are only partial remedies. This paper proposes a corrected version of the Concentration Index which is superior to the original Concentration Index and its variants, in the sense that it is a rank-dependent indicator which satisfies four key requirements (transfer, level independence, cardinal invariance, and mirror). The paper also shows how the corrected Concentration Index can be decomposed and generalized.

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PMID:
18367273
DOI:
10.1016/j.jhealeco.2008.02.003
[PubMed - indexed for MEDLINE]
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