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A Welfare Analysis of Genetic Testing in Health Insurance Markets with Adverse Selection and Prevention

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  • David Bardey

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, UNIANDES - Universidad de los Andes [Bogota])

  • Philippe de Donder

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, CNRS - Centre National de la Recherche Scientifique)

Abstract

Personalized medicine is still in its infancy, with costly genetic tests providing little actionable information in terms of efficient prevention decisions. As a consequence, few people undertake these tests currently, and health insurance contracts pool all agents irrespective of their genetic background. Cheaper and especially more informative tests will induce more people to undertake these tests and will impact not only the pricing but also the type of health insurance contracts. We develop a setting with endogenous prevention decisions and we study which contract type (pooling or separating) emerges at equilibrium as a function of the proportion of agents undertaking the genetic test as well as of the informativeness of this test. Starting from the current low take-up rate generating at equilibrium a pooling contract with no prevention effort, we obtain that an increase in the take-up rate has first an ambiguous impact on welfare, and then unambiguously decreases welfare as one moves from a pooling to a separating equilibrium. It is only once the take-up rate is large enough that the equilibrium is separating that any further increase in take-up rate increases aggregate welfare, by a composition effect. However, a better pooling contract in which policyholders undertake preventive actions (and lower their health risk) can also be attained if the informativeness of the genetic tests increases sufficiently.

Suggested Citation

  • David Bardey & Philippe de Donder, 2024. "A Welfare Analysis of Genetic Testing in Health Insurance Markets with Adverse Selection and Prevention," Working Papers hal-04082748, HAL.
  • Handle: RePEc:hal:wpaper:hal-04082748
    Note: View the original document on HAL open archive server: https://hal.science/hal-04082748v2
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    References listed on IDEAS

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    1. Bardey, David & De Donder, Philippe & Mantilla, César, 2019. "How is the trade-off between adverse selection and discrimination risk affected by genetic testing? Theory and experiment," Journal of Health Economics, Elsevier, vol. 68(C).
    2. Bardey, David & De Donder, Philippe, 2013. "Genetic testing with primary prevention and moral hazard," Journal of Health Economics, Elsevier, vol. 32(5), pages 768-779.
    3. Francesca Barigozzi & Dominique Henriet, 2011. "Genetic Information: Comparing Alternative Regulatory Approaches When Prevention Matters," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 13(1), pages 23-46, February.
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    5. Hoel, Michael & Iversen, Tor & Nilssen, Tore & Vislie, Jon, 2006. "Genetic testing in competitive insurance markets with repulsion from chance: A welfare analysis," Journal of Health Economics, Elsevier, vol. 25(5), pages 847-860, September.
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    7. David Crainich, 2017. "Self-Insurance With Genetic Testing Tools," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 84(1), pages 73-94, March.
    8. Hoel, Michael & Iversen, Tor, 2002. "Genetic testing when there is a mix of compulsory and voluntary health insurance," Journal of Health Economics, Elsevier, vol. 21(2), pages 253-270, March.
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    13. Peter, Richard & Richter, Andreas & Thistle, Paul, 2017. "Endogenous information, adverse selection, and prevention: Implications for genetic testing policy," Journal of Health Economics, Elsevier, vol. 55(C), pages 95-107.
    14. Michael Hoy & Fabienne Orsi & François Eisinger & Jean Paul Moatti, 2003. "The Impact of Genetic Testing on Healthcare Insurance," The Geneva Papers on Risk and Insurance - Issues and Practice, Palgrave Macmillan;The Geneva Association, vol. 28(2), pages 203-221, April.
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    Cited by:

    1. Posey, Lisa L. & Thistle, Paul D., 2021. "Genetic testing and genetic discrimination: Public policy when insurance becomes “too expensive”," Journal of Health Economics, Elsevier, vol. 77(C).
    2. Bardey, David & De Donder, Philippe & Mantilla, César, 2019. "How is the trade-off between adverse selection and discrimination risk affected by genetic testing? Theory and experiment," Journal of Health Economics, Elsevier, vol. 68(C).

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    More about this item

    Keywords

    Adverse selection; consent law regulation; discrimination risk; person- alized medicine; pooling and separating equilibria; Wilson anticipatory equilibrium.;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • I13 - Health, Education, and Welfare - - Health - - - Health Insurance, Public and Private

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