TY - JOUR
T1 - Field testing and clinical validation of the mSQUASH to measure physical activity in patients with Sjögren's disease
AU - Ausma, Noa S.
AU - van der Kraan, Yvonne M.
AU - de Wolff, Liseth
AU - Kokol, Helene
AU - Carbo, Marlies J.G.
AU - Kieskamp, Stan C.
AU - Paap, Davy
AU - Spoorenberg, Anneke
AU - Bootsma, Hendrika
AU - Arends, Suzanne
N1 - Publisher Copyright:
© Copyright CliniCal and ExpErimEntal rhEumatology 2024.
PY - 2024/12
Y1 - 2024/12
N2 - Objective: Regular physical activity is recommended in patients with rheumatic diseases. In order to uniformly measure physical activity, our aim was to perform field testing of the modified Short QUestionnaire to ASsess Health enhancing physical activity (mSQUASH) in Sjögren's disease (SjD), together with other rheumatic diseases, and to investigate construct validity and test-retest reliability of the mSQUASH in patients with SjD.Methods: The mSQUASH was tested by conducting semi-structured interviews in patients with SjD (n=10), systemic lupus erythematosus (n=10), giant cell arteritis/polymyalgia rheumatica (n=10) and axial spondyloarthritis (n=13) to check for understandability, interpretation and relevance. For construct validity (n=263 SjD), the association of mSQUASH to other patient-reported outcome measures was analysed using Spearman correlations. It was hypothesised that correlations are highest for physical-related outcomes, with fair to moderate correlations due to partly overlapping constructs. For test-retest reliability (n=75 SjD), intra-class correlation coefficients (ICCs) were calculated and Bland-Altman analysis was performed.Results: All patient groups perceived the mSQUASH as relevant and easy to complete. Some minor adaptations and clarifications were implemented. As expected, mSQUASH total score showed fair associations with ESSPRI total score (ρ=-0.30) and EQ-5D total score (ρ=-0.34). Within the subdomains, correlations were higher for ESSPRI fatigue and pain compared to dryness and highest for EQ-5D activity and mobility. Test-retest reliability was good, with an ICC of 0.84. Bland-Altman analysis showed no systemic bias, but limits of agreement were wide.Conclusion: The mSQUASH is a feasible, valid and reliable questionnaire to assess daily physical activity in SjD patients.
AB - Objective: Regular physical activity is recommended in patients with rheumatic diseases. In order to uniformly measure physical activity, our aim was to perform field testing of the modified Short QUestionnaire to ASsess Health enhancing physical activity (mSQUASH) in Sjögren's disease (SjD), together with other rheumatic diseases, and to investigate construct validity and test-retest reliability of the mSQUASH in patients with SjD.Methods: The mSQUASH was tested by conducting semi-structured interviews in patients with SjD (n=10), systemic lupus erythematosus (n=10), giant cell arteritis/polymyalgia rheumatica (n=10) and axial spondyloarthritis (n=13) to check for understandability, interpretation and relevance. For construct validity (n=263 SjD), the association of mSQUASH to other patient-reported outcome measures was analysed using Spearman correlations. It was hypothesised that correlations are highest for physical-related outcomes, with fair to moderate correlations due to partly overlapping constructs. For test-retest reliability (n=75 SjD), intra-class correlation coefficients (ICCs) were calculated and Bland-Altman analysis was performed.Results: All patient groups perceived the mSQUASH as relevant and easy to complete. Some minor adaptations and clarifications were implemented. As expected, mSQUASH total score showed fair associations with ESSPRI total score (ρ=-0.30) and EQ-5D total score (ρ=-0.34). Within the subdomains, correlations were higher for ESSPRI fatigue and pain compared to dryness and highest for EQ-5D activity and mobility. Test-retest reliability was good, with an ICC of 0.84. Bland-Altman analysis showed no systemic bias, but limits of agreement were wide.Conclusion: The mSQUASH is a feasible, valid and reliable questionnaire to assess daily physical activity in SjD patients.
KW - field testing
KW - measurement properties
KW - patient-reported outcome measures
KW - physical activity
KW - Sjögren's disease
UR - http://www.scopus.com/inward/record.url?scp=85213240261&partnerID=8YFLogxK
U2 - 10.55563/clinexprheumatol/lcbs9m
DO - 10.55563/clinexprheumatol/lcbs9m
M3 - Article
C2 - 39656594
AN - SCOPUS:85213240261
SN - 0392-856X
VL - 42
SP - 2468
EP - 2475
JO - Clinical and Experimental Rheumatology
JF - Clinical and Experimental Rheumatology
IS - 12
ER -