Journal article

Head-to-head comparison of health-state values derived by a probabilistic choice model and scores on a visual analogue scale.

Paul FM Krabbe, Elly A Stolk, Nancy J Devlin, Feng Xie, Elise H Quik, A Simon Pickard

Eur J Health Econ | Published : 2017

Abstract

BACKGROUND: Health states were quantified based on discrete choice (DC) modeling and visual analogue scale (VAS) values using the five-level version of the EQ-5D (EQ-5D-5L). The aim of this study was to determine the extent of the relationship between DC derived values (indirect method) and VAS values (direct method). METHODS: Data were collected in Canada, the United Kingdom, the Netherlands, and the United States. Respondents were asked to perform paired comparisons between two EQ-5D-5L health states for DC. In total, 400 different EQ-5D-5L states were included. After each DC task, respondents were prompted to score the two states one after another on a VAS. Intraclass correlation coeffici..

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