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Table 2 Clinical history, physical examination and laboratory findings of the studied patients

From: Fatty corner lesions in T1-weighted magnetic resonance imaging as an alternative to sacroiliitis for diagnosis of axial spondyloarthritis

  axSpA (n = 238)
Mean ± SD/ (percentage)
Non-axSpA (n = 62)
Mean ± SD/ (percentage)
p-value
Age (years) 43.5 ± 13.1 47.1 ± 17.1 0.13
Duration of back pain (years) 12.0 ± 11.4 7.1 ± 8.4 0.002
Male sex 131 (55.0%) 16 (26.2%) < 0.001
HLA-B27 positivity 169 (76.8%) 8 (16.0%) < 0.001
Smoker 66 (27.8%) 11 (19.0%) 0.17
Regular alcohol use 27 (11.6%) 5 (5.3%) 0.16
Radiologic AS 149 (62.9%) 0 (0.0%) < 0.001
Back pain NRS 5.74 ± 2.35 6.10 ± 2.27 0.32
BASDAI 4.82 ± 2.00 NA
BASFI 3.12 ± 2.44 NA
Tender joint count 1.57 ± 3.02 2.74 ± 4.66 0.07
Swollen joint count 0.60 ± 1.57 0.97 ± 2.58 0.31
Enthesitis score 0.43 ± 0.90 0.58 ± 1.80 0.53
Number of dactylitis 0.19 ± 1.02 0.26 ± 1.47 0.66
BASMI 3.44 ± 1.65 NA
ESR (mm/hr) 32.9 ± 25.6 34.5 ± 26.2 0.68
CRP (mg/L) 1.07 ± 1.94 0.37 ± 1.27 0.001
Presence of FCL at C-spine 28 (11.8%) 2 (3.2%) 0.05
Presence of FCL at T-spine 91 (38.2%) 8 (12.9%) < 0.001
Presence of FCL at L-spine 85 (35.7%) 16 (25.8%) 0.14
BASGI 5.38 ± 2.49 NA
ASDAS ESR 3.03 ± 1.02 NA
ASDAS CRP 1.91 ± 0.83 NA
  1. HLA Human Leucocyte Antigen, ASAS Assessment of SpondyloArthritis international Society, IBP inflammatory back pain, axSpA axial spondyloarthritis, AS ankylosing spondylitis, NRS numerical rating scale, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, ESR erythrocyte sedimentation rate, CRP C-reactive protein, BASGI Bath Ankylosing Spondylitis Global Index, ASDAS Ankylosing Spondylitis Disease Activity Index, FCL fatty corner lesion, C-spine cervical spine, T-spine thoracic spine, L-spine lumbar spine, NA not applicable