Spondyloarthritis & psoriatic arthritis

Known and less well-known comorbidities in axial spondyloarthritis: what are we overlooking? Results from the SPARTAKUS cohort

Scand J RheumatolPublished Matched cohort study

Authors' conclusion

axSpA is linked to several comorbidities, whereas no difference was observed between nr-axSpA and r-axSpA.

Study context

Population
Axial spondyloarthritis (axSpA) patients from the SPARTAKUS cohort (55% men; mean age/disease duration 52/26 years), Sweden
Participants
246 axSpA patients
Exposure
axSpA vs matched general population comparators; nr-axSpA vs r-axSpA
  • axSpAn = 246
  • nr-axSpAn = 82
  • r-axSpAn = 164
Outcome
Prevalences of 59 comorbidities from ICD-10 diagnosis registrations in primary/specialized care
Follow-up
10 year period preceding SPARTAKUS inclusion
Methodological detailsmatched to general population comparators (five/patient), ICD-10 register data, 10 year period preceding inclusion, logistic regression, controlled for multiple comparisons
  • Matched to general population comparators (five/patient)
  • ICD-10 register data, 10 year period preceding inclusion
  • Logistic regression
  • Controlled for multiple comparisons

Main finding

As reported in the abstract

Comorbidity prevalences, axSpA vs comparators (significantly higher in axSpA)
Anterior uveitis, axSpA vs comparators
28% vs 1%
IBD, axSpA vs comparators
10%/1%
Psoriasis, axSpA vs comparators
10%/3%
Ischaemic heart disease, axSpA vs comparators
7%/3%
FM/chronic pain, axSpA vs comparators
12%/3%
Nephrolithiasis, axSpA vs comparators
8%/3%
Gastritis (NSAID side-effect), axSpA vs comparators
21%/10%
Hypertension (NSAID side-effect), axSpA vs comparators
31%/19%
Cataract (GC side-effect), axSpA vs comparators
11%/7%
Glaucoma (GC side-effect), axSpA vs comparators
7%/3%
Osteoporosis/vertebral compression (GC side-effect), axSpA vs comparators
4%/1%

Observational data: associations, not effects.

Further findings

Charlson Comorbidity Index excluding rheumatic disease

No significant between-group difference (patients/comparators)

Original publication

Known and less well-known comorbidities in axial spondyloarthritis: what are we overlooking? Results from the SPARTAKUS cohort. Scand J Rheumatol. Published 1 September 2025. doi:10.1080/03009742.2025.2525635

Composed by AI from the published abstract and checked against it. How Briefs are made →

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