Valuing Health Using Time Trade-Off and Discrete Choice Experiment Methods- Does Dimension Order Impact on Health State Values?

Mar 1, 2016, 00:00
10.1016/j.jval.2015.11.005
https://www.valueinhealthjournal.com/article/S1098-3015(15)05125-6/fulltext
Title : Valuing Health Using Time Trade-Off and Discrete Choice Experiment Methods- Does Dimension Order Impact on Health State Values?
Citation : https://www.valueinhealthjournal.com/action/showCitFormats?pii=S1098-3015(15)05125-6&doi=10.1016/j.jval.2015.11.005
First page : 210
Section Title : Preference-Based Assessments
Open access? : No
Section Order : 11

Background

Health states defined by multiattribute instruments such as the EuroQol five-dimensional questionnaire with five response levels (EQ-5D-5L) can be valued using time trade-off (TTO) or discrete choice experiment (DCE) methods. A key feature of the tasks is the order in which the health state dimensions are presented. Respondents may use various heuristics to complete the tasks, and therefore the order of the dimensions may impact on the importance assigned to particular states.

Objective

To assess the impact of different EQ-5D-5L dimension orders on health state values.

Methods

Preferences for EQ-5D-5L health states were elicited from a broadly representative sample of members of the UK general public. Respondents valued EQ-5D-5L health states using TTO and DCE methods across one of three dimension orderings via face-to-face computer-assisted personal interviews. Differences in mean values and the size of the health dimension coefficients across the arms were compared using difference testing and regression analyses.

Results

Descriptive analysis suggested some differences between the mean TTO health state values across the different dimension orderings, but these were not systematic. Regression analysis suggested that the magnitude of the dimension coefficients differs across the different dimension orderings (for both TTO and DCE), but there was no clear pattern.

Conclusions

There is some evidence that the order in which the dimensions are presented impacts on the coefficients, which may impact on the health state values provided. The order of dimensions is a key consideration in the design of health state valuation studies.

Categories :
  • Health State Utilities
  • Methodological & Statistical Research
  • Patient-Centered Research
  • Patient-reported Outcomes & Quality of Life Outcomes
  • Preference Methods
Tags :
  • discrete choice
  • EQ-5D
  • health state valuation
  • health-related quality of life
  • time trade-off
Regions :
  • Africa
  • Eastern and Central Europe
  • Middle East
  • Western Europe
ViH Article Tags :