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The duration effect: a link between TTO and VAS values

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Author Info
Benjamin M. Craig
Abstract

The value of a health state may depend on how long an individual has had to endure the health state (i.e. hedonic load). In this paper, we test the constant proportionality (CP) assumption and determine the sign of relationship between duration and health state value for 42 health states using the nationally representative data from the United Kingdom Measurement and Valuation of Health study. The results reject the CP assumption and suggest that the relationship is negative for optimal health (i.e. fair innings argument) and that the relationship is positive for poorer health states (i.e. adaptation). We find no evidence of the maximum endurable time hypothesis using these data. This evidence on the duration effect has important implications for outcomes research and the economic evaluation of interventions. Copyright © 2008 John Wiley & Sons, Ltd.

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File URL: http://hdl.handle.net/10.1002/hec.1356
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Publisher Info
Article provided by John Wiley & Sons, Ltd. in its journal Health Economics.

Volume (Year): 18 (2009)
Issue (Month): 2 ()
Pages: 217-225
Download reference. The following formats are available: HTML (with abstract), plain text (with abstract), BibTeX, RIS (EndNote, RefMan, ProCite), ReDIF
Handle: RePEc:wly:hlthec:v:18:y:2009:i:2:p:217-225

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

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  1. Han Bleichrodt & José Luis Pinto & José María Abellán-Perpiñán, 2003. "A Consistency Test of the Time Trade-Off," Working Papers, Research Center on Health and Economics 676, Department of Economics and Business, Universitat Pompeu Fabra. [Downloadable!]
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  2. Marjon M. Van Der Pol & John A. Cairns, 2000. "Negative and zero time preference for health," Health Economics, John Wiley & Sons, Ltd., vol. 9(2), pages 171-175.
  3. Peep F. M. Stalmeier & Jan J. V. Busschbach & Leida M. Lamers & Paul F. M. Krabbe, 2005. "The gap effect: discontinuities of preferences around dead," Health Economics, John Wiley & Sons, Ltd., vol. 14(7), pages 679-685. [Downloadable!]
  4. Dolan, Paul, 1996. "Modelling valuations for health states: the effect of duration," Health Policy, Elsevier, vol. 38(3), pages 189-203, December. [Downloadable!] (restricted)
  5. Dolan, Paul & Stalmeier, Peep, 2003. "The validity of time trade-off values in calculating QALYs: constant proportional time trade-off versus the proportional heuristic," Journal of Health Economics, Elsevier, vol. 22(3), pages 445-458, May. [Downloadable!] (restricted)
  6. Joshua A. Salomon & Christopher J.L. Murray, 2004. "A multi-method approach to measuring health-state valuations," Health Economics, John Wiley & Sons, Ltd., vol. 13(3), pages 281-290. [Downloadable!]
  7. Groot, Wim, 2000. "Adaptation and scale of reference bias in self-assessments of quality of life," Journal of Health Economics, Elsevier, vol. 19(3), pages 403-420, May. [Downloadable!] (restricted)
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This page was last updated on 2009-11-16.

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