EuroQoL EQ-5D Questionnaire

William F. Lawrence

The EuroQoL EQ-5D questionnaire is a brief utility index designed to measure health-related quality of life and health preferences. The Panel on CostEffectiveness in Health and Medicine recommends the use of societal or community preferences to calculate quality-adjusted life years (QALYs) for the reference case analysis in cost-effectiveness analyses. Preference-based health state classification systems, or ‘utility indices,’ represent a class of survey instruments recommended as suitable for providing these community preferences for reference-case analyses. While the mechanisms for creating scoring functions vary for different utility indices, these indices all consist of a descriptive health survey on which the respondent describes his or her state of health on multiple domains. The survey is then scored to produce a summary measure, which represents an average preference score of the population in which the scoring algorithm was derived. The preference scores calculated by this class of instruments are suitable for use in QALY ...

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