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Comparing Three Versions of the Time Tradeoff

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  • J. Kenneth Buckingham
  • Jennifer Birdsall
  • John Graham Douglas

Abstract

This paper reports a comparative study of three formulations of the time-tradeoff (TTO) method of health valuation. One asks people to consider giving up time each day in exchange for better health. The second asks people to consider giving up time during a 12-month interval. The third is the more conventional TTO in which people are asked to contemplate a reduction in life expectancy. Questionnaires were sent to 4,087 adults selected at random from the population of Scotland. Each respondent provided a de scription of his or her health, and was asked to value an improvement in that health, using all three formulations of the TTO. The daily TTO appeared to be an improvement on the conventional formulation, correlating more strongly with health, eliciting re sponses that appeared to be more precise, and obtaining information about the value of health from a far greater number of respondents. The performance of the annual TTO appeared to be only slightly inferior to that of the daily TTO. Key words: time tradeoff; quality of life; health valuation. (Med Decis Making 1996;16:335-347)

Suggested Citation

  • J. Kenneth Buckingham & Jennifer Birdsall & John Graham Douglas, 1996. "Comparing Three Versions of the Time Tradeoff," Medical Decision Making, , vol. 16(4), pages 335-347, October.
    • Handle: RePEc:sae:medema:v:16:y:1996:i:4:p:335-347
    DOI: 10.1177/0272989X9601600404
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    References listed on IDEAS

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    1. Torrance, George W., 1986. "Measurement of health state utilities for economic appraisal : A review," Journal of Health Economics, Elsevier, vol. 5(1), pages 1-30, March.
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    1. 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, May.
    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. Trude Arnesen & Mari Trommald, 2005. "Are QALYs based on time trade‐off comparable? – A systematic review of TTO methodologies," Health Economics, John Wiley & Sons, Ltd., vol. 14(1), pages 39-53, January.
    4. Diego Ossa & Andrew Briggs & Emma McIntosh & Warren Cowell & Tim Littlewood & Mark Sculpher, 2007. "Recombinant Erythropoietin for Chemotherapy-Related Anaemia," PharmacoEconomics, Springer, vol. 25(3), pages 223-237, March.

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