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. 2025 Jul;34(7):1901-1911.
doi: 10.1007/s11136-025-03950-x. Epub 2025 Mar 28.

COSMIN reporting guideline for studies on measurement properties of patient‑reported outcome measures: version 2.0

Joel J Gagnier  1   2 , Guilherme Tavares de Arruda  3   4 , Caroline B Terwee  4   5 , Lidwine B Mokkink  4   5 ; Consensus group
Collaborators, Affiliations

COSMIN reporting guideline for studies on measurement properties of patient‑reported outcome measures: version 2.0

Joel J Gagnier et al. Qual Life Res. 2025 Jul.

Abstract

Purpose: In 2021 a set of consensus-based and empirically informed reporting recommendations were developed for primary studies of the measurement properties of patient‑reported outcome measures (PROMs). With their use, we determined that certain reporting items were redundant, some required revisions, and additional items were needed. The aim of this study was to update the COSMIN reporting guideline and develop version 2.0 for studies on measurement properties of PROMs.

Methods: There were seven phases to this update: 1. Identification of relevant experts for the meeting; 2. Solicitation of written feedback on the existing reporting recommendations checklist; 3. Development of the Explanation & Elaboration document; 4. A face-to-face consensus meeting; 5. Post-meeting revisions of the checklist and Explanation & Elaboration document; 6. Circulation of the resultant manuscripts to experts for solicitation of final feedback, and 7. Completion of the final documents and resultant manuscripts, distribution to all members for approval, and finalization.

Results: Overall, the revised recommendations for version 2.0 consists of 31 general items and 37 specific items. Of the general items, 15 were revised or reordered and one item was added. Of the specific items, 15 were revised or reordered and two new items were added.

Conclusion: We recommend that the earlier version of this guidance (version 1.0) no longer be used. These revised reporting recommendations (version 2.0) will help to guide those reporting or reading these investigations on the essential information that is recommended to be included.

Keywords: Consensus-based methods; Health measurement scales; Psychometric properties; Reporting recommendations.

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Conflict of interest statement

Declarations. Conflict of interest: The authors have no relevant financial or non-financial interests to disclose.

References

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