Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 1 Baseline characteristics for all patients with axial symptoms included in Esperanza (left column) and for the subgroup of patients who underwent MRI-SI (right column)

From: Sponyloarthritis features forecasting the presence of HLA-B27 or sacroiliitis on magnetic resonance imaging in patients with suspected axial spondyloarthritis: results from a cross-sectional study in the ESPeranza Cohort

Characteristic Patients with axial symptoms referred to Esperanza (n = 665) Patients with axial symptoms and SIJ MRI available (n = 326)
Age, years 33.2 ± 7.1 32.8 ± 7.0
Male 363 (54.6) 175 (53.7)
Symptoms duration, months 11.9 ± 6.6 12.6 ± 6.4
Morning stiffness 393 (59.1) 195 (59.8)
Improve with exercise, not with rest 208 (31.3) 97 (29.8)
Alternating buttock pain 197 (29.6) 98 (30.1)
Insidious onset 430 (64.7) 256 (78.5)
Awakening at second half of night 315 (47.4) 169 (51.8)
Response to NSAIDs 407 (61.2) 200 (61.3)
Enthesitis 107 (16.1) 45 (13.8)
Psoriasis 82 (12.3) 35 (10.7)
Dactylitis 26 (3.9) 14 (4.3)
IBD 26 (3.9) 10 (3.1)
Uveitis 34 (5.1) 16 (4.9)
Arthritis 95 (14.3) 37 (11.3)
Family history 170 (25.6) 89 (27.3)
HLA-B27 270 (40.6) 144 (44.2)
Elevated CRP, mg/L 177 (26.6) 89 (27.3)
BASDAI 4.0 ± 2.3 3.9 ± 2.3
BASFI 2.5 ± 2.4 2.3 ± 2.4
ASAS criteria for axial SpA 291 (43.8) 167 (51.2)
 Imaging arm 194 (29.2) 132 (40.5)
  MRI-SI positive 85 (12.8) 85 (26.1)
  mNY-positivea 109 (16.4) 47 (14.4)
 Clinical arm only 97 (14.6) 35 (10.7)
  1. Results are presented as mean ± SD or number (%). aPatients who were both magnetic resonance imaging of sacroiliac joints (MRI-SI)-positive and modified New York criteria for ankylosing spondylitis (mNY)-positive) are included. NSAIDs nonsteroidal anti-inflammatory drugs, IBD inflammatory bowel disease, HLA-B27 human leucocyte antigen B27, CRP C-reactive protein, BASDAI Bath ankylosing spondylitis disease activity index, BASFI Bath ankylosing spondylitis functional index, ASAS Assessment of SpondyloArthritis International Society, SpA spondyloarthritis