The mSQUASH is a feasible and valid measurement tool to uniformly assess daily physical activity in patients with rheumatic diseases
Authors' 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
Study context
- Population
- Patients with rheumatic diseases: Axial spondyloarthritis (axSpA), SjD, SLE and GCA/PMR (field testing); patients with axSpA (clinical validation)interviews: axSpA 13, SjD 10, SLE 10, GCA/PMR 10
- Outcome
- Linguistic and face validity (field testing); construct validity, test-retest reliability and responsiveness of the English mSQUASH (clinical validation in axSpA)
Methodological detailstranslation and cross-cultural adaptation (forward-backward Beaton protocol), semistructured interviews, clinical validation
- Translation and cross-cultural adaptation (forward-backward Beaton protocol)
- Semistructured interviews
- Clinical validation
Performance
As reported in the abstract
Measurement properties of the English mSQUASH in axSpA
- Construct validity (n=95): Spearman correlation with ASDAS
- ρ=−0.31
- Construct validity: Spearman correlation with BASFI
- ρ=−0.37
- Construct validity: Spearman correlation with ASAS Health Index
- ρ=−0.30
- Test-retest reliability (n=82), intraclass correlation coefficients (ICC)
- 0.87
- Responsiveness (n=80), standardised response means (SRM), improved
- 0.72
- Responsiveness, SRM, stable
- 0.06
- Responsiveness, SRM, worsened
- −0.74
Original publication
The mSQUASH is a feasible and valid measurement tool to uniformly assess daily physical activity in patients with rheumatic diseases. RMD Open. Published 23 October 2024. doi:10.
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