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On correcting the concentration index for binary variables

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  • Kjellsson, Gustav
  • Gerdtham, Ulf-G.

Abstract

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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Bibliographic Info

Article provided by Elsevier in its journal Journal of Health Economics.

Volume (Year): 32 (2013)
Issue (Month): 3 ()
Pages: 659-670

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Handle: RePEc:eee:jhecon:v:32:y:2013:i:3:p:659-670

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Web page: http://www.elsevier.com/locate/inca/505560

Related research

Keywords: Health inequality; Socioeconomic inequality; Concentration index; Binary variables;

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References

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  1. Lasso de la Vega, Casilda & Aristondo, Oihana, 2012. "Proposing indicators to measure achievement and shortfall inequality consistently," Journal of Health Economics, Elsevier, vol. 31(4), pages 578-583.
  2. Erreygers, Guido, 2009. "Correcting the Concentration Index," Journal of Health Economics, Elsevier, vol. 28(2), pages 504-515, March.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. Hernández-Quevedo, Cristina & Jones, Andrew M. & López-Nicolás, Angel & Rice, Nigel, 2006. "Socioeconomic inequalities in health: A comparative longitudinal analysis using the European Community Household Panel," Social Science & Medicine, Elsevier, vol. 63(5), pages 1246-1261, September.
  9. 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.
  10. Wagstaff, Adam, 2009. "Correcting the concentration index: A comment," Journal of Health Economics, Elsevier, vol. 28(2), pages 516-520, March.
  11. 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.
  12. Adam Wagstaff, 2011. "The concentration index of a binary outcome revisited," Health Economics, John Wiley & Sons, Ltd., vol. 20(10), pages 1155-1160, October.
  13. Erreygers, Guido, 2009. "Correcting the Concentration Index: A reply to Wagstaff," Journal of Health Economics, Elsevier, vol. 28(2), pages 521-524, March.
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Cited by:
  1. Hansen, Fredrik & Anell, Anders & Gerdtham, Ulf-G & Lyttkens, Carl Hampus, 2013. "The Future of Health Economics: The Potential of Behavioral and Experimental Economics," Working Papers 2013:20, Lund University, Department of Economics.
  2. Kjellsson, Gustav & Gerdtham, Ulf-G., 2013. "Lost in Translation: Rethinking the Inequality-Equivalence Criteria for Bounded Health Variables," Working Papers 2013:18, Lund University, Department of Economics, revised 02 Jan 2014.
  3. Vincenzo Carrieri & Ansgar Wübker, 2012. "Assessing Inequalities in Preventive Care Use in Europe," Ruhr Economic Papers 0371, Rheinisch-Westfälisches Institut für Wirtschaftsforschung, Ruhr-Universität Bochum, Universität Dortmund, Universität Duisburg-Essen.

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