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Towards a better QALY model

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  • José-Mar�a Abellán-Perpi�án

    (Department of Applied Economics, University of Murcia, Spain)

  • José-Luis Pinto-Prades
  • Ildefonso Méndez-Mart�nez

    (Department of Applied Economics, University of Murcia, Spain)

  • Xabier Bad�a-Llach

    (Health Outcomes Research Europe, Spain)

Abstract

This paper presents a test of the predictive validity of various classes of QALY models (i.e. linear, power and exponential models). We first estimated TTO utilities for 43 EQ-5D chronic health states and next these states were embedded in nonchronic health profiles. The chronic TTO utilities were then used to predict the responses to TTO questions with nonchronic health profiles. We find that the power QALY model clearly outperforms linear and exponential QALY models. Optimal power coefficient is 0.65. Our results suggest that TTO-based QALY calculations may be biased. This bias can be corrected using a power QALY model. Copyright © 2006 John Wiley & Sons, Ltd.

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File URL: http://hdl.handle.net/10.1002/hec.1095
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Bibliographic Info

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

Volume (Year): 15 (2006)
Issue (Month): 7 ()
Pages: 665-676

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Handle: RePEc:wly:hlthec:v:15:y:2006:i:7:p:665-676

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

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Cited by:
  1. Attema, Arthur & Brouwer, Werner & l'Haridon, Olivier, 2013. "Prospect theory in the health domain: a quantitative assessment," MPRA Paper 44207, University Library of Munich, Germany.
  2. Attema, Arthur E. & Brouwer, Werner B.F., 2012. "A test of independence of discounting from quality of life," Journal of Health Economics, Elsevier, vol. 31(1), pages 22-34.
  3. Attema, Arthur E. & Brouwer, Werner B.F., 2009. "The correction of TTO-scores for utility curvature using a risk-free utility elicitation method," Journal of Health Economics, Elsevier, vol. 28(1), pages 234-243, January.
  4. Robinson, Angela & Gyrd-Hansen, Dorte & Bacon, Philomena & Baker, Rachel & Pennington, Mark & Donaldson, Cam, 2013. "Estimating a WTP-based value of a QALY: The ‘chained’ approach," Social Science & Medicine, Elsevier, vol. 92(C), pages 92-104.
  5. Pinto-Prades, Jose Luis & Loomes, Graham & Brey, Raul, 2009. "Trying to estimate a monetary value for the QALY," Journal of Health Economics, Elsevier, vol. 28(3), pages 553-562, May.

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