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Valuing EQ-5D health states: A review and analysis, CHERE Working Paper 2007/9

Richard Norman, Paula Cronin (), Rosalie Viney (), Madeleine King (), Deborah Street (), John Brazier () and Julie Ratcliffe
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Paula Cronin: CHERE, University of Technology, Sydney
Madeleine King: CHERE, University of Technology, Sydney
Deborah Street: University of Technology, Sydney

Working Papers from CHERE, University of Technology, Sydney

Abstract: Objective: To identify the key methodological issues in the construction of population-level EQ-5D / Time Trade-Off (TTO) preference elicitation studies. Study Design: This study involves three components. The first was to identify existing population-level EQ-5D TTO studies. The second was to illustrate and discuss the key areas of divergence between studies, including the international comparison of tariffs. The third was to portray the relative merits of each of the approaches, and to compare the results of studies across countries. Results: While most papers report use of the protocol developed in the original UK study, we identified three key areas of divergence in the construction and analysis of surveys. These are the number of health states valued in order to determine the algorithm for estimating all health states, the approach to valuing states worse than immediate death, and the choice of algorithm. Finally, the evidence on international comparisons suggests differences between countries, although it is difficult to disentangle differences in cultural attitudes with random error and differences due to methodological divergence. Conclusion: Differences in methods are likely to obscure true differences in values between countries. However, population-specific valuation sets for countries engaging in economic evaluation would better represent societal attitudes.

Keywords: health state valuation; EQ5-D (search for similar items in EconPapers)
JEL-codes: I10 (search for similar items in EconPapers)
Date: 2007-10
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