Logical inconsistencies in time trade-off valuation of EQ-5D-5L health states: Whose fault is it?

ABSTRACT:

Introduction

Inconsistency in the time trade-off (TTO) task in EQ-5D-5L occurs when a respondent gives a higher value to a logically worse health state, the occurrence of inconsistency compromises the quality of the data. It is not yet clear which factors are associated with individual level inconsistency. Relating inconsistency to the characteristics of the respondent, interviewer, and the interview process could be helpful in understanding the causes of inconsistency. The objective of this paper is to discover the factors associated with individual level inconsistencies.

Methods

Twenty interviewers interviewed 1,296 respondents and each respondent valued 10 health states using the EQ-VT platform in 5 cities in China. At the respondent level, inconsistency was identified in

SUBMITTER: Yang Z 

PROVIDER: S-EPMC5608280 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature