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Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale

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 wi...

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Autores principales: Webb, Edward J. D., O’Dwyer, John, Meads, David, Kind, Paul, Wright, Penny
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7366608/
https://www.ncbi.nlm.nih.gov/pubmed/32180068
http://dx.doi.org/10.1007/s10198-020-01173-0
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author Webb, Edward J. D.
O’Dwyer, John
Meads, David
Kind, Paul
Wright, Penny
author_facet Webb, Edward J. D.
O’Dwyer, John
Meads, David
Kind, Paul
Wright, Penny
author_sort Webb, Edward J. D.
collection PubMed
description 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.
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spelling pubmed-73666082020-07-21 Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale Webb, Edward J. D. O’Dwyer, John Meads, David Kind, Paul Wright, Penny Eur J Health Econ Original Paper 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. Springer Berlin Heidelberg 2020-03-16 2020 /pmc/articles/PMC7366608/ /pubmed/32180068 http://dx.doi.org/10.1007/s10198-020-01173-0 Text en © The Author(s) 2020 Open AccessThis 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. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Original Paper
Webb, Edward J. D.
O’Dwyer, John
Meads, David
Kind, Paul
Wright, Penny
Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title_full Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title_fullStr Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title_full_unstemmed Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title_short Transforming discrete choice experiment latent scale values for EQ-5D-3L using the visual analogue scale
title_sort transforming discrete choice experiment latent scale values for eq-5d-3l using the visual analogue scale
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7366608/
https://www.ncbi.nlm.nih.gov/pubmed/32180068
http://dx.doi.org/10.1007/s10198-020-01173-0
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