Authors
Stuart J Wright, Caroline M Vass, Gene Sim, Michael Burton, Denzil G Fiebig, Katherine Payne
Publication date
2018/10
Source
The Patient-Patient-Centered Outcomes Research
Volume
11
Pages
475-488
Publisher
Springer International Publishing
Description
Background
Scale heterogeneity, or differences in the error variance of choices, may account for a significant amount of the observed variation in the results of discrete choice experiments (DCEs) when comparing preferences between different groups of respondents.
Objective
The aim of this study was to identify if, and how, scale heterogeneity has been addressed in healthcare DCEs that compare the preferences of different groups.
Methods
A systematic review identified all healthcare DCEs published between 1990 and February 2016. The full-text of each DCE was then screened to identify studies that compared preferences using data generated from multiple groups. Data were extracted and tabulated on year of publication, samples compared, tests for scale heterogeneity, and analytical methods to account for scale …
Scholar articles
SJ Wright, CM Vass, G Sim, M Burton, DG Fiebig… - The Patient-Patient-Centered Outcomes Research, 2018