Logical Inconsistencies in 3 Preference Elicitation Methods for EQ-5D Health States

Mônica Viegas Andrade, Kenya Noronha, Paul Kind, Carla de Barros Reis, Lucas Resende de Carvalho
2015 Medical decision making  
Background. Logical inconsistency for health states preferences occurs when one logically worse health state, in terms of quality of life, is ranked higher than a logically better health state. Objective. This study explores the presence of inconsistent responses for the EQ-5D health states valuations in a Brazilian population survey. It compares the level of inconsistency in 3 preference-based methods: ranking, visual analog scale (VAS), and time tradeoff (TTO). The influence of EQ-5D health
more » ... ate descriptions is explored by examining the distance between states using a city-block metric as an indicator of proximity. Moreover, it examines the association between formal education and the presence of inconsistencies, as well as the effect of removing inconsistent respondents on the estimation of social value sets from TTO and VAS. Methods.
doi:10.1177/0272989x15601047 pmid:26289747 fatcat:ctc4snxqhrgalaa4mjoiabdl2e