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A limited-sample benchmark approach to assess and improve the performance of risk equalization models

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  • Stam, Pieter J.A.
  • van Vliet, René C.J.A.
  • van de Ven, Wynand P.M.M.
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    Abstract

    A new method is proposed to assess and improve the performance of risk equalization models in competitive markets for individual health insurance, where compensation is intended for variation in observed expenditures due to so-called S(ubsidy)-type risk factors but not for variation due to other, so-called N(on-subsidy)-type risk factors. Given the availability of a rich subsample of individuals for which normative expenditures, YNORM, can be accurately determined, we make two contributions: (a) any risk equalization scheme applied to the entire population, YREF, should be evaluated through its performance in the subsample, by comparing YREF with YNORM (not by comparing YREF with observed expenditures, Y, in the entire population, as commonly done); (b) conventional risk equalization schemes can be improved by the subsample regression of YNORM, rather than Y, on the risk adjusters that are observable in the entire population. This new method is illustrated by an application to the 2004 Dutch risk equalization model.

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    Bibliographic Info

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

    Volume (Year): 29 (2010)
    Issue (Month): 3 (May)
    Pages: 426-437

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    Handle: RePEc:eee:jhecon:v:29:y:2010:i:3:p:426-437

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

    Related research

    Keywords: Health insurance Managed competition Subsidies Risk equalization Optimal risk adjustment;

    References

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    1. Glazer, Jacob & McGuire, Thomas G., 2002. "Setting health plan premiums to ensure efficient quality in health care: minimum variance optimal risk adjustment," Journal of Public Economics, Elsevier, vol. 84(2), pages 153-173, May.
    2. Frank, Richard G. & Glazer, Jacob & McGuire, Thomas G., 2000. "Measuring adverse selection in managed health care," Journal of Health Economics, Elsevier, vol. 19(6), pages 829-854, November.
    3. Richard C. van Kleef & Wynand P. M. M. van de Ven & René C. J. A. van Vliet, 2006. "A Voluntary Deductible in Social Health Insurance with Risk Equalization: "Community-Rated or Risk-Rated Premium Rebate?"," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 73(3), pages 529-550.
    4. Erik Schokkaert & Carine Van de Voorde, 2000. "Risk adjustment and the fear of markets: The case of Belgium," Health Care Management Science, Springer, vol. 3(2), pages 121-130, February.
    5. Erik SCHOKKAERT & Carine VAN DE VOORDE, 2000. "Risk Selection and the Specification of the Conventional Risk Adjustment Formula," Center for Economic Studies - Discussion papers ces0011, Katholieke Universiteit Leuven, Centrum voor Economische Studiën.
    6. van de Ven, Wynand P. M. M. & van Vliet, Rene C. J. A. & Schut, Frederik T. & van Barneveld, Erik M., 2000. "Access to coverage for high-risks in a competitive individual health insurance market: via premium rate restrictions or risk-adjusted premium subsidies?," Journal of Health Economics, Elsevier, vol. 19(3), pages 311-339, May.
    7. Van de ven, Wynand P.M.M. & Ellis, Randall P., 2000. "Risk adjustment in competitive health plan markets," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 14, pages 755-845 Elsevier.
    8. Roy Carr-Hill & Geoffrey Hardman & Stephen Martin & Stuart Peacock & Trevor Sheldon & Peter Smith, 1994. "A formula for distributing NHS revenues based on small area use of hospital beds," Working Papers 022cheop, Centre for Health Economics, University of York.
    9. Ellis, Randall P., 1998. "Creaming, skimping and dumping: provider competition on the intensive and extensive margins1," Journal of Health Economics, Elsevier, vol. 17(5), pages 537-555, October.
    10. Hausman, Jerry A, 1978. "Specification Tests in Econometrics," Econometrica, Econometric Society, vol. 46(6), pages 1251-71, November.
    11. van Barneveld, Erik M. & Lamers, Leida M. & van Vliet, Rene C. J. A. & van de Ven, Wynand P. M. M., 2001. "Risk sharing as a supplement to imperfect capitation: a tradeoff between selection and efficiency," Journal of Health Economics, Elsevier, vol. 20(2), pages 147-168, March.
    12. Erik Schokkaert & Geert Dhaene & Carine Van De Voorde, 1998. "Risk adjustment and the trade-off between efficiency and risk selection: an application of the theory of fair compensation," Health Economics, John Wiley & Sons, Ltd., vol. 7(5), pages 465-480.
    13. David E. M. Sappington & Tracy R. Lewis, 1999. "Using Subjective Risk Adjusting to Prevent Patient Dumping in the Health Care Industry," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 8(3), pages 351-382, 09.
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    Cited by:
    1. Asthana, Sheena & Gibson, Alex, 2011. "Setting health care capitations through diagnosis-based risk adjustment: A suitable model for the English NHS?," Health Policy, Elsevier, vol. 101(2), pages 133-139, July.

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