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The role of government in health insurance markets with adverse selection

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Author Info

  • Roger Feldman

    (Division of Health Services Research, University of Minnesota, USA)

  • Carlos Escribano

    (Departamento de Economia, Universidad Carlos III, Madrid, Spain)

  • Laura Pellisé

    (Departamento de Economia, Universidad Carlos III, Madrid, Spain)

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    Abstract

    This paper analyzes the welfare economics of three arrangements for purchasing health insurance: competitive markets in which consumers are free to choose among options with different levels of coverage and prices; systems with compulsory partial pooling which permit private firms to sell supplementary coverage; and government-run pools that purchase comprehensive coverage at a single price for all consumers. Competitive insurance markets are assumed to face the problem of 'adverse selection'. This refers to a situation in which the insurer cannot observe characteristics of individuals that affect the cost of insurance and that are known to the individuals. Competitive markets with adverse selection are not efficient because low risks cannot purchase comprehensive insurance coverage. However, government-run pools with comprehensive coverage are an inefficient solution to the problem of adverse selection. Compulsory partial coverage may represent an attractive alternative to both competitive markets and comprehensive pools. We discover two situations when government intervention of this type will succeed: when there are not many high risks in the population, and when the risk types are similar. We discuss the implications of these results for health insurance programs in several countries. Our results also have implications for the allocation of public funds for disease-prevention projects. A project targeted at high risks will produce external benefits for low risks, even though they are not directly affected by the program. However, a successful project might eliminate the market for private insurance; in this case the government should consider mandating partial insurance coverage.Copyright © 1998 John Wiley & Sons, Ltd.

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    Bibliographic Info

    Article provided by John Wiley & Sons, Ltd. in its journal Health Economics.

    Volume (Year): 7 (1998)
    Issue (Month): 8 ()
    Pages: 659-670

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    Handle: RePEc:wly:hlthec:v:7:y:1998:i:8:p:659-670

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    Web page: http://www3.interscience.wiley.com/cgi-bin/jhome/5749

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    Cited by:
    1. Pau Olivella & Marcos Vera-Hernandez, 2006. "Testing for adverse selection into private medical insurance," IFS Working Papers W06/02, Institute for Fiscal Studies.
    2. Amy Finkelstein, 2002. "When Can Partial Public Insurance Produce Pareto Improvements?," NBER Working Papers 9035, National Bureau of Economic Research, Inc.
    3. Chernew, Michael E. & Frick, Kevin D., 1999. "The impact of managed care on the existence of equilibrium in health insurance markets," Journal of Health Economics, Elsevier, vol. 18(5), pages 571-590, October.
    4. Daniel McFadden & Carlos Noton & Pau Olivella, 2012. "Remedies for Sick Insurance," Working Papers 620, Barcelona Graduate School of Economics.

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