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Article History

Received: 10 June 2025

Accepted: 5 October 2025

First Online: 10 November 2025

Declarations

:

: Nancy Devlin, Michael Herdman, Simone Schieskow and Janine Verstraete are members of the EuroQol Group. The funder influenced our decision to search for any additional evidence specifically relevant to the EuroQol Research Foundation as part of our search strategy, but none was found. The funder at large had no further role in the review process. Philip A. Powell, Victoria Gale, Gurdas Singh, Anthea Sutton and Jill Carlton have no conflicts of interest that are directly relevant to the content of this article.

: Not applicable.

: Not applicable.

: Not applicable.

: Not applicable.

: Not applicable.

: Concept and design: JC, ND, MH, SS, JV. Acquisition of data: VG, GS, AS. Analysis and interpretation of data: JC, PAP. Drafting of the manuscript: JC, PAP, AS. Critical revision of the paper for important intellectual content: JC, ND, VG, MH, PAP, SS, AS, JV. Obtaining funding: JC, ND, MH, SS, AS, JV. All authors certify that they meet the ICMJE criteria for authorship. All authors approved the final version of the manuscript and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.