conindex: Estimation of concentration indices

Concentration indices are frequently used to measure inequality in one variable over the distribution of another. Most commonly, they are applied to the measurement of socioeconomic-related inequality in health. We introduce a user-written Stata command which provides point estimates and standard er...

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Bibliographic Details
Published in:The Stata journal Vol. 16; no. 1; pp. 112 - 138
Main Authors: O'Donnell, Owen, O'Neill, Stephen, Van Ourti, Tom, Walsh, Brendan
Format: Journal Article
Language:English
Published: United States 01.03.2016
Subjects:
inequality
health
rank-dependent indices
concentration index
healthcare
ISSN:1536-867X
Online Access:Get more information
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Summary:Concentration indices are frequently used to measure inequality in one variable over the distribution of another. Most commonly, they are applied to the measurement of socioeconomic-related inequality in health. We introduce a user-written Stata command which provides point estimates and standard errors of a range of concentration indices. The command also graphs concentration curves (and Lorenz curves) and performs statistical inference for the comparison of inequality between groups. The article offers an accessible introduction to the various concentration indices that have been proposed to suit different measurement scales and ethical responses to inequality. The command's capabilities and syntax are demonstrated through analysis of wealth-related inequality in health and healthcare in Cambodia.
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ISSN:1536-867X
DOI:10.1177/1536867X1601600112