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A test of the QALY model when health varies over time

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  • Spencer, Anne

Abstract

Quality-adjusted life years (QALYs) estimate the utility derived from health profiles by taking account of life expectancy and quality of life. In applying QALYs to situations where health varies over time, it is usual to assume that we can add the utilities from constituent health states. This paper investigates the QALY approach to combining health states over time using two tests. The first test rejects additive independence, the central assumption of the QALY model, for individual respondents. The second test is equivocal. The tests are, therefore, unable to conclusively reject the QALY approach to combining health states over time.

Suggested Citation

  • Spencer, Anne, 2003. "A test of the QALY model when health varies over time," Social Science & Medicine, Elsevier, vol. 57(9), pages 1697-1706, November.
    • Handle: RePEc:eee:socmed:v:57:y:2003:i:9:p:1697-1706
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    Citations

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    Cited by:

    1. Hougaard, Jens Leth & Moreno-Ternero, Juan D. & Østerdal, Lars Peter, 2013. "A new axiomatic approach to the evaluation of population health," Journal of Health Economics, Elsevier, vol. 32(3), pages 515-523.
    2. Luciana Scalone & Peep Stalmeier & Silvano Milani & Paul Krabbe, 2015. "Values for health states with different life durations," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 16(9), pages 917-925, December.
    3. Bleichrodt, Han & Filko, Martin, 2008. "New tests of QALYs when health varies over time," Journal of Health Economics, Elsevier, vol. 27(5), pages 1237-1249, September.
    4. McNamee, Paul, 2007. "What difference does it make? The calculation of QALY gains from health profiles using patient and general population values," Health Policy, Elsevier, vol. 84(2-3), pages 321-331, December.
    5. Benjamin M. Craig, 2009. "The duration effect: a link between TTO and VAS values," Health Economics, John Wiley & Sons, Ltd., vol. 18(2), pages 217-225, February.
    6. Kristian Schultz Hansen & Lars Peter Østerdal, 2006. "Models of Quality‐Adjusted Life Years when Health Varies Over Time: Survey and Analysis," Journal of Economic Surveys, Wiley Blackwell, vol. 20(2), pages 229-255, April.

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