Parallel Valuation: A Direct Comparison of EQ-5D-3L and EQ-5D-5L Societal Value Sets

Ernest H. Law, A. Simon Pickard, Feng Xie, Surrey M. Walton, Todd A. Lee and Alan Schwartz

Medical Decision Making, 2018, vol. 38, issue 8, 968-982

Abstract: Objective . To compare and contrast EQ-5D-5L (5L) and EQ-5D-3L (3L) health state values derived from a common sample. Methods . Data from the 2017 US EQ-5D valuation study were analyzed. Value sets were estimated with random-effects linear regression based on composite time trade-off (cTTO) valuations for 3L and 5L health states with 2 approaches to model specification: main effects only and additional N3/N45 terms. Properties of the descriptive system and value set characteristics were compared by examining distributions of predicted index scores, ceiling effects, and single-level transition values from adjacent corner health states. Mean transition values were calculated for all predicted 3L and 5L health states and plotted against baseline index scores. Results . A total of 1062 respondents were included in the analysis. The observed mean cTTO values for the worst possible 3L and 5L health states were −0.423 and −0.343, respectively. The range of scale was larger with the 3L, compared to the 5L, for both main effects and N term models. Values for the mildest 5L health states (range, 0.857−0.924) were similar to 11111 for the 3L. Parameter estimates for matched dimension levels differed by

Keywords: descriptive system; EQ-5D; health preferences; health utility; preference-based measures; quality-adjusted life year; time tradeoff; value sets (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:sae:medema:v:38:y:2018:i:8:p:968-982

DOI: 10.1177/0272989X18802797

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