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Competition in the market for supplementary health insurance: The case of competing nonprofit sickness funds

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  • Ellert, Alexander
  • Urmann, Oliver
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    Abstract

    This paper examines the competition of nonprofit sickness funds in the market for supplementary health insurance. We investigate product quality strategies when quality is costly and the sickness funds are competing for customers. As long as the sickness funds choose the qualities for simultaneously, any equilibrium will be nondifferentiated. Only if total demand is increasing in quality, both sickness funds provide the maximum quality. For decreasing total demand the existence of an equilibrium depends on the consumers' sensitivity. If there is no equilibrium in the simultaneous competition, sequential quality competition leads to a differentiated equilibrium with a first mover advantage. --

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    Bibliographic Info

    Paper provided by University of Hamburg, Institute for Risk and Insurance in its series Working Papers on Risk and Insurance with number 25 [rev.].

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    Date of creation: 2012
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    Handle: RePEc:zbw:hzvwps:25r

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    Web page: http://www.hzv-uhh.de/
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    Keywords: supplementary health insurance; vertical differentiation; output maximization;

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    1. Annika Herr, 2011. "Quality and Welfare in a Mixed Duopoly with Regulated Prices: The Case of a Public and a Private Hospital," German Economic Review, Verein für Socialpolitik, vol. 12(4), pages 422-437, November.
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    3. Kifmann, Mathias, 2005. "Risk Selection and Complementary Health Insurance: The Swiss Approach," Discussion Papers, Series 1 328, University of Konstanz, Department of Economics.
    4. de Fraja, Giovanni & Delbono, Flavio, 1989. "Alternative Strategies of a Public Enterprise in Oligopoly," Oxford Economic Papers, Oxford University Press, vol. 41(2), pages 302-11, April.
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    10. Toshihiro Matsumura & Noriaki Matsushima, 2004. "Endogenous Cost Differentials between Public and Private Enterprises: A Mixed Duopoly Approach," Economica, London School of Economics and Political Science, vol. 71(284), pages 671-688, November.
    11. Brekke, Kurt R. & Cellini, Roberto & Siciliani, Luigi & Straume, Odd Rune, 2010. "Competition and quality in health care markets: A differential-game approach," Journal of Health Economics, Elsevier, vol. 29(4), pages 508-523, July.
    12. Aoki, Reiko & Prusa, Thomas J., 1997. "Sequential versus simultaneous choice with endogenous quality," International Journal of Industrial Organization, Elsevier, vol. 15(1), pages 103-121, February.
    13. GABSZEWICZ, Jean J. & THISSE, Jacques-François, . "Price competition, quality and income disparities," CORE Discussion Papers RP -370, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    14. Zhenhui Xu & Melissa Birch, 1999. "The Economic Performance of State-owned Enterprises in Argentina an Empirical Assessment," Review of Industrial Organization, Springer, vol. 14(4), pages 355-375, June.
    15. Noriaki Matsushima & Toshihiro Matsumura, 2003. "Mixed oligopoly and spatial agglomeration," Canadian Journal of Economics, Canadian Economics Association, vol. 36(1), pages 62-87, February.
    16. Danzon, Patricia M., 2002. "Welfare effects of supplementary insurance: a comment," Journal of Health Economics, Elsevier, vol. 21(5), pages 923-926, September.
    17. Motta, Massimo, 1993. "Endogenous Quality Choice: Price vs. Quantity Competition," Journal of Industrial Economics, Wiley Blackwell, vol. 41(2), pages 113-31, June.
    18. Yasuo Sanjo, 2009. "Quality choice in a health care market: a mixed duopoly approach," The European Journal of Health Economics, Springer, vol. 10(2), pages 207-215, May.
    19. Boom, Anette, 1995. "Asymmetric International Minimum Quality Standards and Vertical Differentiation," Journal of Industrial Economics, Wiley Blackwell, vol. 43(1), pages 101-19, March.
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