RMD open · 2024
The mSQUASH is a feasible and valid measurement tool to uniformly assess daily physical activity in patients with rheumatic diseases.
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van der Kraan Yvonne M, Gensler Lianne, Paap Davy, Thovmasyan Ellen, Ausma Noa, Kokol Helene, Carbo Marlies, Kieskamp Stan C, de Leeuw Karina, van der Geest Kornelis S M, Bootsma Hendrika, Spoorenberg Anneke, Arends Suzanne
Аннотация
BACKGROUND: The modified Short QUestionnaire to ASsess Health-enhancing physical activity (mSQUASH) was originally developed and validated in Dutch patients with axial spondyloarthritis (axSpA). To support world-wide distribution, applicability and comparability of measuring physical activity, our aim was to perform translation and cross-cultural adaptation of the mSQUASH into English, field testing in other rheumatic diseases and clinical validation in patients with axSpA.
METHODS: The Dutch mSQUASH was translated into English according to forward-backward Beaton protocol. Semistructured interviews were conducted in representative samples of patients with axSpA (n=13), Sjögren's disease (n=10), systemic lupus erythematosus (n=10) and giant cell arteritis/polymyalgia rheumatica (n=10) to verify relevance, comprehensiveness and comprehensibility. For construct validity (n=95), Spearman correlations were used with clinical outcome assessments. For test-retest reliability (n=82), intraclass correlation coefficients (ICC) were calculated. For responsiveness (n=80), standardised response means (SRM) were calculated stratified by Anchor method.
RESULTS: Translation and cross-cultural adaptation of the mSQUASH into English were successfully carried out, which can serve as basis for other translations. Only minor adaptations and clarifications were implemented. Fair correlations were found between mSQUASH and Axial Spondyloarthritis Disease Activity Score (ρ=-0.31), Bath Ankylosing Spondylitis Functional Index (ρ=-0.37) and Assessment of SpondyloArthritis International Society-Health Index (ρ=-0.30). Test-retest reliability was very good (ICC: 0.87). Responsiveness corresponded to the direction of self-reported changes in physical activity (SRM: 0.72 for improved, 0.06 for stable and -0.74 for worsened).
CONCLUSION: The mSQUASH showed good linguistic and face validity according to field testing in different rheumatic diseases. Clinical validation confirmed good construct validity, test-retest reliability and responsiveness in patients with axSpA, which supports the use of the mSQUASH in clinical practice and research.
METHODS: The Dutch mSQUASH was translated into English according to forward-backward Beaton protocol. Semistructured interviews were conducted in representative samples of patients with axSpA (n=13), Sjögren's disease (n=10), systemic lupus erythematosus (n=10) and giant cell arteritis/polymyalgia rheumatica (n=10) to verify relevance, comprehensiveness and comprehensibility. For construct validity (n=95), Spearman correlations were used with clinical outcome assessments. For test-retest reliability (n=82), intraclass correlation coefficients (ICC) were calculated. For responsiveness (n=80), standardised response means (SRM) were calculated stratified by Anchor method.
RESULTS: Translation and cross-cultural adaptation of the mSQUASH into English were successfully carried out, which can serve as basis for other translations. Only minor adaptations and clarifications were implemented. Fair correlations were found between mSQUASH and Axial Spondyloarthritis Disease Activity Score (ρ=-0.31), Bath Ankylosing Spondylitis Functional Index (ρ=-0.37) and Assessment of SpondyloArthritis International Society-Health Index (ρ=-0.30). Test-retest reliability was very good (ICC: 0.87). Responsiveness corresponded to the direction of self-reported changes in physical activity (SRM: 0.72 for improved, 0.06 for stable and -0.74 for worsened).
CONCLUSION: The mSQUASH showed good linguistic and face validity according to field testing in different rheumatic diseases. Clinical validation confirmed good construct validity, test-retest reliability and responsiveness in patients with axSpA, which supports the use of the mSQUASH in clinical practice and research.