Webb, E orcid.org/0000-0001-7918-839X, O'Dwyer, J orcid.org/0000-0002-7212-6089, Meads, D orcid.org/0000-0003-1369-2483 et al. (2 more authors) (2020) Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale. European Journal of Health Economics, 21 (5). pp. 787-800. ISSN 1618-7598
Abstract
Background
Discrete choice experiments (DCEs) are widely used to elicit health state preferences. However, additional information is required to transform values to a scale with dead valued at 0 and full health valued at 1. This paper presents DCE-VAS, an understandable and easy anchoring method with low participant burden based on the visual analogue scale (VAS).
Methods
Responses from 1450 members of the UK general public to a discrete choice experiment (DCE) were analysed using mixed logit models. Latent scale valuations were anchored to a full health = 1, dead = 0 scale using participants’ VAS ratings of three states including the dead. The robustness of results was examined. This included a filtering procedure with the influence each individual respondent had on valuation being calculated, and those whose influence was more than two standard deviations away from the mean excluded.
Results
Coefficients in all models were in the expected direction and statistically significant. Excluding respondents who self-reported not understanding the VAS task did not significantly influence valuation, but excluding a small number who valued 33333 extremely low did. However, after eight respondents were removed via the filtering procedure, valuations were robust to removing other participants.
Conclusion
DCE-VAS is a feasible way of anchoring DCE results to a 0–1 anchored scale with low additional respondent burden.
Metadata
Item Type: | Article |
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Authors/Creators: | |
Copyright, Publisher and Additional Information: | © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
Keywords: | EQ-5D; Discrete choice experiment; Anchoring; Visual analogue scale; Valuation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cancer and Pathology (LICAP) > Clinical Cancer Research (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Health Sciences (Leeds) > Academic Unit of Health Economics (Leeds) |
Funding Information: | Funder Grant number MRC (Medical Research Council) MR/M025179/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Jul 2020 15:32 |
Last Modified: | 29 Jul 2020 10:50 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1007/s10198-020-01173-0 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163573 |
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