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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Volume (Year): 32 (2013)
Issue (Month): 3 ()
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- ERREYGERS, Guido, 2006.
"Correcting the Concentration Index,"
2006027, University of Antwerp, Faculty of Applied Economics.
- Hernández-Quevedo, Cristina & Jones, Andrew M. & López-Nicolás, Angel & Rice, Nigel, 2006.
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- Wagstaff, Adam, 2009. "Correcting the concentration index: A comment," Journal of Health Economics, Elsevier, vol. 28(2), pages 516-520, March.
- repec:dau:papers:123456789/10510 is not listed on IDEAS
- Guido Erreygers & Tom Van Ourti, 2011. "Putting the cart before the horse. A comment on Wagstaff on inequality measurement in the presence of binary variables," Health Economics, John Wiley & Sons, Ltd., vol. 20(10), pages 1161-1165, October.
- 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.
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"Measuring socioeconomic inequality in health, health care and health financing by means of rank-dependent indices: A recipe for good practice,"
Journal of Health Economics,
Elsevier, vol. 30(4), pages 685-694, July.
- Guido Erreygers & Tom Van Ourti, 2010. "Measuring Socioeconomic Inequality in Health, Health Care and Health Financing by Means of Rank-Dependent Indices: A Recipe for Good Practice," Tinbergen Institute Discussion Papers 10-076/3, Tinbergen Institute.
- Kakwani, Nanak & Wagstaff, Adam & van Doorslaer, Eddy, 1997. "Socioeconomic inequalities in health: Measurement, computation, and statistical inference," Journal of Econometrics, Elsevier, vol. 77(1), pages 87-103, March.
- Adam Wagstaff, 2005. "The bounds of the concentration index when the variable of interest is binary, with an application to immunization inequality," Health Economics, John Wiley & Sons, Ltd., vol. 14(4), pages 429-432.
- Clarke, Philip M. & Gerdtham, Ulf-G. & Johannesson, Magnus & Bingefors, Kerstin & Smith, Len, 2002. "On the measurement of relative and absolute income-related health inequality," Social Science & Medicine, Elsevier, vol. 55(11), pages 1923-1928, December.
- Adam Wagstaff, 2011. "The concentration index of a binary outcome revisited," Health Economics, John Wiley & Sons, Ltd., vol. 20(10), pages 1155-1160, October.
- Udaya S Mishra & William Joe, 2010. "Socioeconomic Inequalities in Childhood Undernutrition in India An Application of the Corrected Concentration Index," Economics Bulletin, AccessEcon, vol. 30(1), pages 847-854.
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