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Time to tweak the TTO: results from a comparison of alternative specifications of the TTO

Matthijs Versteegh (), Arthur Attema, Mark Oppe, Nancy Devlin () and Elly Stolk

The European Journal of Health Economics, 2013, vol. 14, issue 1, 43-51

Abstract: This article examines the effect that different specifications of the time trade-off (TTO) valuation task may have on values for EQ-5D-5L health states. The new variants of the TTO, namely lead-time TTO and lag-time TTO, along with the classic approach to TTO were compared using two durations for the health states (15 and 20 years). The study tested whether these methods yield comparable health-state values. TTO tasks were administered online. It was found that lag-time TTO produced lower values than lead-time TTO and that the difference was larger in the longer time frame. Classic TTO values most resembled those of the lag-time TTO in a 20-year time frame in terms of mean absolute difference. The relative importance of different domains of health was systematically affected by the duration of the health state. In the tasks with a 10-year health-state duration, anxiety/depression had the largest negative impact on health-state values; in the tasks with a 5-year duration, the pain/discomfort domain had the largest negative impact. Copyright The Author(s) 2013

Keywords: Time trade-off; Lead-time TTO; Lag-time TTO; Utility; Health-state preferences; I10 (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s10198-013-0507-y

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