TENDINopathy severity assessment – achilles (TENDINS-A): Development and content validity assessment of a new patient-reported outcome measure for achilles tendinopathy

Document Type

Journal Article

Publication Title

Journal of Orthopaedic & Sports Physical Therapy

Publisher

JOSPT Inc

School

Nutrition and Health Innovation Research Institute / School of Medical and Health Sciences

Comments

Murphy, M. C., Newsham-West, R., Cook, J., Chimenti, R. L., de Vos, R. J., Maffulli, N., . . . Rio, E. K. (2023). TENDINopathy severity assessment – achilles (TENDINS-A): Development and content validity assessment of a new patient-reported outcome measure for achilles tendinopathy. Journal of Orthopaedic & Sports Physical Therapy, (11), 1-16. https://doi.org/10.2519/jospt.2023.11964

Abstract

Objective: To develop a new patient-reported outcome measure (PROM) assessing TENDINopathy Severity of the Achilles (TENDINS-Achilles) and evaluate its content validity.

Design: Mixed-methods, modified Delphi.

Methods: We performed 1 round of semistructured one-on-one interview responses with professionals and patients, for initial item generation. This was followed by 1 round of survey responses for professionals and a final round of semistructured one-on-one interviews with patients. The work culminated in a PROM to quantify Achilles tendinopathy severity under the core health domain of disability. Participants identified 3 subdomains contributing to the severity of disability of Achilles tendinopathy: pain, symptoms, and functional capacity.

Results: All 8 patient participants invited to participate were enrolled. Forty professional participants (50% women, six different continents) were invited to participate and 30 were enrolled (75% response rate). Therefore, a total of 30 professionals and 8 patients were included within this study. Following 3 rounds of qualitative or quantitative feedback, this study has established the content validity of TENDINS-A (good relevance, comprehensibility, and comprehensiveness) as a new PROM to assess the severity of Achilles tendinopathy, which assesses aspects of pain, symptoms, and functional capacity.

Conclusion: TENDINS-A has established content validity and is appropriate for use with clinical and research populations. We recommend users interpret TENDINS-A results cautiously, until further testing evaluates the most appropriate scoring scale, reliability, construct validity, criterion validity, and responsiveness of TENDINS-A. Until these psychometric properties are established, we suggest using TENDINS-A alongside existing tools. J Orthop Sports Phys Ther 2023;53(11):1-16. Epub: 24 August 2023. doi:10.2519/jospt.2023.11964

DOI

10.2519/jospt.2023.11964

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