An exploration of methods for obtaining 0 = dead anchors for latent scale EQ-5D-Y values
Koonal Shah (),
Juan Manuel Ramos-Goñi,
Simone Kreimeier and
Nancy Devlin ()
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Juan Manuel Ramos-Goñi: Axentiva Solutions
Simone Kreimeier: Bielefeld University
The European Journal of Health Economics, 2020, vol. 21, issue 7, No 11, 1103 pages
Abstract Objectives Discrete choice experiments (DCEs) can be used to obtain latent scale values for the EQ-5D-Y, but these require anchoring at 0 = dead to meet the conventions of quality-adjusted life year (QALY) estimation. The primary aim of this study is to compare four preference elicitation methods for obtaining anchors for latent scale EQ-5D-Y values. Methods Four methods were tested: visual analogue scale (VAS), DCE (with a duration attribute), lag-time time trade-off (TTO) and the location-of-dead (LOD) approach. In computer-assisted personal interviews, UK general public respondents valued EQ-5D-3L health states from an adult perspective and EQ-5D-Y health states from a 10-year-old child perspective. Respondents completed valuation tasks using all four methods, under both perspectives. Results 349 interviews were conducted. Overall, respondents gave lower values under the adult perspective compared to the child perspective, with some variation across methods. The mean TTO value for the worst health state (33333) was about equal to dead in the child perspective and worse than dead in the adult perspective. The mean VAS rescaled value for 33333 was also higher in the child perspective. The DCE produced positive child perspective values and negative adult perspective values, though the models were not consistent. The LOD median rescaled value for 33333 was negative under both perspectives and higher in the child perspective. Discussion There was broad agreement across methods. Potential criteria for selecting a preferred anchoring method are presented. We conclude by discussing the decision-making circumstances under which utilities and QALY estimates for children and adults need to be commensurate to achieve allocative efficiency.
Keywords: EQ-5D-Y; Children; Valuation; Stated preferences; Quality-adjusted life year (search for similar items in EconPapers)
JEL-codes: I10 (search for similar items in EconPapers)
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