On correcting the concentration index for binary variables
This article discusses measurement of socioeconomic inequalities in the prevalence of a health condition, in response to the recent exchange between Guido Erreygers and Adam Wagstaff, in which they discuss the merits of their own corrections to the frequently used concentration index. We first reconcile their debate and discuss the value judgments implicit in their indices. Next, we provide a formal definition of the previously undefined value judgment in Wagstaff's correction. Finally, we show empirically that the choice of index matters, as illustrated by comparisons between countries using data from the European Survey of Health, Ageing and Retirement.
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- Paul Allanson & Dennis Petrie, 2013. "On The Choice Of Health Inequality Measure For The Longitudinal Analysis Of Income‐Related Health Inequalities," Health Economics, John Wiley & Sons, Ltd., vol. 22(3), pages 353-365, 03.
- Adam Wagstaff, 2011. "The concentration index of a binary outcome revisited," Health Economics, John Wiley & Sons, Ltd., vol. 20(10), pages 1155-1160, October.
- Jusot, Florence & Kunst, Anton E. & Leinsalu, Mall & Menvielle, Gwenn & Schaap, Maartje M. & Roskam, Albert-Jan R. & Stirbu, Irina & Mackenbach, Johan P., 2008. "Socioeconomic Inequalities in Health in 22 European Countries," Economics Papers from University Paris Dauphine 123456789/10510, Paris Dauphine University.
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