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An exploration of the non‐iterative time trade‐off method to value health states

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  • Yan Feng
  • Arne Risa Hole
  • Milad Karimi
  • Aki Tsuchiya
  • Ben van Hout

Abstract

Time Trade‐Off (TTO) usually relies on “iteration,” which is susceptible to bias. Discrete Choice Experiment with duration (or DCETTO) is free of such bias, but respondents find this cognitively more challenging. This paper explores non‐iterative TTO with or without lead time: NI(LT)TTO. In NI(LT)TTO, respondents see a series of independent pairwise choices without iteration (similar to DCETTO), but one of the two scenarios always involves full health for a shorter duration (similar to TTO). We compare three different “types” of NI(LT)TTO relative to DCETTO. Each type is presented in two “modes”: (a) verbally tabulated (as in a DCE) and (b) with visual aids (as in a TTO). The study has 8 survey variants, each with 12 experimental choice tasks and a 13th task with a logically determined answer. Data on the 12 experimental choices from an online survey of 6,618 respondents are modelled, by variant, using conditional logistic regressions. The results indicate that NI(LT)TTO is feasible, but some relatively mild states appear to have implausibly low predicted values, and the range of predicted values is much narrower than in DCETTO. The presentation of NI(LT)TTO tasks needs further improvement.

Suggested Citation

  • Yan Feng & Arne Risa Hole & Milad Karimi & Aki Tsuchiya & Ben van Hout, 2018. "An exploration of the non‐iterative time trade‐off method to value health states," Health Economics, John Wiley & Sons, Ltd., vol. 27(8), pages 1247-1263, August.
    • Handle: RePEc:wly:hlthec:v:27:y:2018:i:8:p:1247-1263
    DOI: 10.1002/hec.3773
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    References listed on IDEAS

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    1. Nancy Devlin & Ken Buckingham & Koonal Shah & Aki Tsuchiya & Carl Tilling & Grahame Wilkinson & Ben van Hout, 2013. "A Comparison Of Alternative Variants Of The Lead And Lag Time Tto," Health Economics, John Wiley & Sons, Ltd., vol. 22(5), pages 517-532, May.
    2. Nancy J. Devlin & Aki Tsuchiya & Ken Buckingham & Carl Tilling, 2011. "A uniform time trade off method for states better and worse than dead: feasibility study of the ‘lead time’ approach," Health Economics, John Wiley & Sons, Ltd., vol. 20(3), pages 348-361, March.
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    8. Daniele Pacifico & Hong il Yoo, 2013. "lclogit: A Stata command for fitting latent-class conditional logit models via the expectation-maximization algorithm," Stata Journal, StataCorp LP, vol. 13(3), pages 625-639, September.
    9. Brendan Mulhern & Nick Bansback & Arne Risa Hole & Aki Tsuchiya, 2017. "Using Discrete Choice Experiments with Duration to Model EQ-5D-5L Health State Preferences," Medical Decision Making, , vol. 37(3), pages 285-297, April.
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    1. Brendan Mulhern & Richard Norman & Deborah J. Street & Rosalie Viney, 2019. "One Method, Many Methodological Choices: A Structured Review of Discrete-Choice Experiments for Health State Valuation," PharmacoEconomics, Springer, vol. 37(1), pages 29-43, January.

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