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Supplementary health insurance in the Colombian managed care system: Adverse or advantageous selection?

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  • Bardey, David
  • Buitrago, Giancarlo

Abstract

The aim of this article is to estimate the type of selection that exists in the voluntary health insurance market in Colombia where the compulsory coverage is implemented through a managed care competition. We build a panel database that combines individuals’ information from the Ministry of Health and a database provided by two private health insurers. We perform the correlation test for health expenditure and coverage. Following Fang et al. (2008), we condition the estimation on health controls that are available to the econometrician but not to insurers. In both cases we obtain a positive correlation, suggesting that adverse selection predominates. In order to rule out some moral hazard effects, we estimate the correlation between previous health service consumption and insurance purchase. The positive correlation obtained is robust to the inclusion of controls for diagnosis, suggesting that despite some risk selection strategies, health insurers are not protected from adverse selection.

Suggested Citation

  • Bardey, David & Buitrago, Giancarlo, 2016. "Supplementary health insurance in the Colombian managed care system: Adverse or advantageous selection?," TSE Working Papers 16-709, Toulouse School of Economics (TSE).
    • Handle: RePEc:tse:wpaper:31080
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    References listed on IDEAS

    as
    1. Liran Einav & Amy Finkelstein & Mark R. Cullen, 2010. "Estimating Welfare in Insurance Markets Using Variation in Prices," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 125(3), pages 877-921.
    2. Alma Cohen, 2005. "Asymmetric Information and Learning: Evidence from the Automobile Insurance Market," The Review of Economics and Statistics, MIT Press, vol. 87(2), pages 197-207, May.
    3. Amy Finkelstein & Kathleen McGarry, 2006. "Multiple Dimensions of Private Information: Evidence from the Long-Term Care Insurance Market," American Economic Review, American Economic Association, vol. 96(4), pages 938-958, September.
    4. Pierre-Andre Chiappori & Bernard Salanie, 2000. "Testing for Asymmetric Information in Insurance Markets," Journal of Political Economy, University of Chicago Press, vol. 108(1), pages 56-78, February.
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    Cited by:

    1. Catalina Gutiérrez S. & Nicol�s G�mez, 2018. "El sistema de salud colombiano en las próximas décadas: cómo avanzar hacia la sostenibilidad y la calidad en la atención," Cuadernos de Fedesarrollo 16251, Fedesarrollo.
    2. M Prem & M. E. Guerra & P Rodr�guez & J. F. Vargas, 2020. "The Peace Baby Boom: Evidence from Colombia’s peace agreement with the FARC," Documentos de Trabajo 18430, Universidad del Rosario.
    3. Guerra-Cújar, María Elvira & Prem, Mounu & Rodriguez-Lesmes, Paul & Vargas, Juan F., 2020. "The Peace Baby Boom: Evidence from Colombia’s peace agreement with FARC," SocArXiv c2ypd, Center for Open Science.
    4. Ketki Sheth, 2021. "Delivering health insurance through informal financial groups: Evidence on moral hazard and adverse selection," Health Economics, John Wiley & Sons, Ltd., vol. 30(9), pages 2185-2199, September.
    5. Ko, Hansoo, 2020. "Moral hazard effects of supplemental private health insurance in Korea," Social Science & Medicine, Elsevier, vol. 265(C).
    6. De La Mata, Dolores & Machado, Matilde P. & Olivella, Pau & Valdés, Maria Nieves, 2022. "Asymmetric Information with multiple risks: the case of the Chilean Private Health Insurance Market," UC3M Working papers. Economics 35441, Universidad Carlos III de Madrid. Departamento de Economía.
    7. repec:osf:socarx:c2ypd_v1 is not listed on IDEAS

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    Keywords

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    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies
    • I13 - Health, Education, and Welfare - - Health - - - Health Insurance, Public and Private

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