Test-retest reliability of the Online Elicitation of Personal Utility Functions (OPUF) approach for valuing the EQ-HWB-S

Aisha Moolla (), Paul Schneider, Ole Marten, Clara Mukuria and Tessa Peasgood
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Aisha Moolla: University of Sheffield
Paul Schneider: University of Sheffield
Ole Marten: Bielefeld University
Clara Mukuria: University of Sheffield
Tessa Peasgood: University of Sheffield

The European Journal of Health Economics, 2025, vol. 26, issue 7, No 5, 1175-1190

Abstract: Abstract Introduction The EQ Health and Wellbeing Short (EQ-HWB-S) is a new 9-item instrument designed to generate utility values. However, its length makes traditional preference elicitation challenging. The Online elicitation of Personal Utility Functions (OPUF) approach has been tested as a potential solution. This study aimed to assess the test-retest reliability of OPUF for valuing the EQ-HWB-S. Methods The OPUF survey was administered twice, two weeks apart, to 220 German participants, including 73 from the general population and 147 patients with diabetes or rheumatic disease. Test-retest reliability was evaluated at individual and aggregate levels, examining dimension rankings, swing weights, level weights, and anchoring factors. Continuous data were analysed using the intraclass correlation coefficient (ICC), and ranking data were compared using Spearman’s correlation coefficient. Individual and aggregate level utility decrements were assessed using ICC and t-tests. Results Approximately 36% of participants had significantly correlated dimension ranks, with 42% selecting the same top-ranked dimension. Poor agreement was shown in 70% of ICC values for individual dimension swing weights. For intermediate level weights, ICC values showed poor agreement in 70% and moderate agreement in 30% of responses. The kappa for individual pairwise comparison tasks was 0.64 (95% CI: 0.54–0.75) showing moderate agreement; however, the ICC for individual-level anchoring factors was 0.12 (p

Keywords: EQ-HWB; Health valuation; Multi-attribute value theory; Multi-criteria decision analysis; Personal utility function; Preference elicitation (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s10198-025-01769-4

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