Spondyloarthritis & psoriatic arthritis
Development and validation analysis of a corrected axial spondyloarthritis metrology index (CASMI)
An erratum to this article was published (Semin Arthritis Rheum, Aug 2026 ↗)
Authors' conclusion
An age-, sex- and height-corrected mobility score, the CASMI, has been developed as a more personalised and valid measure of mobility in axSpA, compared to BASMI.
Study context
- Population
- r-axSpA population (OASIS cohort); development using non-axSpA individuals and severe axSpA patients
- Comparison
- CASMI vs BASMI
- Outcome
- Metrology score
Methodological detailsanchors adjusted for age, sex and height using MOBILITY study regression coefficients, validation in r-axSpA population (OASIS cohort)
- Anchors adjusted for age, sex and height using MOBILITY study regression coefficients
- Validation in r-axSpA population (OASIS cohort)
Performance
As reported in the abstract
CASMI
3.2
SD 2.0
BASMI
3.8
SD 1.6
Further findings
Known-group discrimination (CASMI)
- Remained good, SMDs consistently above 0.80
Original publication
Development and validation analysis of a corrected axial spondyloarthritis metrology index (CASMI). Semin Arthritis Rheum. Published 9 April 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →