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The TTO method and procedural invariance

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Author Info
Anne Spencer (Department of Economics, Queen Mary, University of London, UK)
Abstract

In a pilot study we investigate whether the inferences we draw about people's preferences towards health care treatments are altered if we vary the procedure that is used to elicit these preferences. In a conventional time trade-off (TTO) question, respondents express their preferences towards treatment by comparing a period of ill-health with a shorter period in a higher quality of life. In our less conventional TTO question, we vary the procedure by asking respondents their preferences towards treatment by comparing a period of ill-health with a longer period in a lower quality of life. The quantitative data are equivocal about whether preferences for treatment differ between the conventional and unconventional questions. The qualitative data support the notion of contrasting issues in the questions that involve prolonging time in a lower quality of life and appear to account for a failure to find quantitative differences in all of the questions. Copyright © 2002 John Wiley & Sons, Ltd.

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File URL: http://hdl.handle.net/10.1002/hec.768
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Publisher Info
Article provided by John Wiley & Sons, Ltd. in its journal Health Economics.

Volume (Year): 12 (2003)
Issue (Month): 8 ()
Pages: 655-668
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:12:y:2003:i:8:p:655-668

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Dolan, Paul & Cookson, Richard, 2000. "A qualitative study of the extent to which health gain matters when choosing between groups of patients," Health Policy, Elsevier, vol. 51(1), pages 19-30, February. [Downloadable!] (restricted)
  2. Dolan, Paul & Jones-Lee, Michael, 1997. "The time trade-off: A note on the effect of lifetime reallocation of consumption and discounting," Journal of Health Economics, Elsevier, vol. 16(6), pages 731-739, December. [Downloadable!] (restricted)
  3. Han Bleichrodt, 2002. "A new explanation for the difference between time trade-off utilities and standard gamble utilities," Health Economics, John Wiley & Sons, Ltd., vol. 11(5), pages 447-456. [Downloadable!]
  4. Tversky, Amos & Kahneman, Daniel, 1992. " Advances in Prospect Theory: Cumulative Representation of Uncertainty," Journal of Risk and Uncertainty, Springer, vol. 5(4), pages 297-323, October.
  5. Alan Diener & Bernie O'Brien & Amiram Gafni, 1998. "Health care contingent valuation studies: a review and classification of the literature," Health Economics, John Wiley & Sons, Ltd., vol. 7(4), pages 313-326.
  6. Paul Dolan & Colin Green, 1998. "Using the person trade-off approach to examine differences between individual and social values," Health Economics, John Wiley & Sons, Ltd., vol. 7(4), pages 307-312.
  7. Dolan, Paul, 1996. "Modelling valuations for health states: the effect of duration," Health Policy, Elsevier, vol. 38(3), pages 189-203, December. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Rosalie Viney & Elizabeth Savage, 2006. "Health care policy evaluation: empirical analysis of the restrictions implied by Quality Adjusted Life Years, CHERE Working Paper 2006/10," Working Papers 2006/10, CHERE, University of Technology, Sydney. [Downloadable!]
  2. F. E. van Nooten & X. Koolman & W. B. F. Brouwer, 2009. "The influence of subjective life expectancy on health state valuations using a 10 year TTO," Health Economics, John Wiley & Sons, Ltd., vol. 18(5), pages 549-558. [Downloadable!]
  3. Arthur E. Attema & Werner B. F. Brouwer, 2008. "Can we fix it? Yes we can! But what? A new test of procedural invariance in TTO-measurement," Health Economics, John Wiley & Sons, Ltd., vol. 17(7), pages 877-885. [Downloadable!]
  4. 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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  5. Ken Buckingham & Nancy Devlin, 2006. "A theoretical framework for TTO valuations of health," Health Economics, John Wiley & Sons, Ltd., vol. 15(10), pages 1149-1154. [Downloadable!]
  6. Richard Norman & Rosalie Viney, 2008. "The effect of discounting on quality of life valuation using the Time Trade-Off, CHERE Working Paper 2008/3," Working Papers 2008/3, CHERE, University of Technology, Sydney. [Downloadable!]
  7. Anne Spencer, 2004. "The implications of linking questions within the SG and TTO methods," Health Economics, John Wiley & Sons, Ltd., vol. 13(8), pages 807-818. [Downloadable!]
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