Table 1 Characteristics of the study population (DESIR cohort ASAS+ patients).

From: Increase In Il-31 Serum Levels Is Associated With Reduced Structural Damage In Early Axial Spondyloarthritis

Variables

ASAS-positive (n = 443)

Clinics parameters

Age (mean ± SD)

31.43 ± 7.33 (n = 443)

Male, n (%)

215 (48.53%) (n = 443)

Disease duration (months) (mean ± SD)

18.85 ± 10.76 (n = 443)

Axial disease, n (%)

237 (53.50%) (n = 443)

Uveitis, n (%)

40 (33.06%) (n = 121)

IBD, n (%)

7 (1.58%) (n = 443)

Psoriasis, n (%)

72 (16.25%) (n = 443)

Enthesitis, n (%)

200 (45.15%) (n = 443)

Dactylitis, n (%)

58 (13.09%) (N = 443)

Synovitis, n (%)

13 (4.91%) (n = 442)

Tobacco use (ever vs never), n (%)

175 (39.59%) (n = 442)

Biologic variables

HLA B27-positive, n (%)

373 (84.20%) (n = 443)

CRP (mean ± SD)

8.91 ± 13.70 (n = 428)

ESR (mean ± SD)

14.83 ± 16.70 (n = 427)

hsCRP (mean ± SD)

8.08 ± 14.05 (n = 434)

Radiologic variables, n (%)

mSASSS ≥1

65 (15.37%) (n = 423)

mNY-SI-positive

121 (27.63%) (n = 438)

MRI-SI-positive

195 (46.54%) (n = 419)

MRI-spine-positive

86 (20.33%) (n = 423)

BMD, n (%)

Low bone density

28 (13.08%) (n = 225)

Current treatments, n (%)

NSAIDs

315 (71.11%) (n = 443)

Steroids

10 (2.26%) (n = 443)

DMARDs

43 (9.71%) (n = 443)

Disease activity and handicap,

mean±SD

BASDAI

42.53 ± 20.30 (n = 442)

BASFI

2.66 ± 1.02 (n = 363)

ASDAS-CRP

2.66 ± 1.02 (n = 363)

  1. IBD, inflammatory bowel disease; HLA-B27, human leukocyte antigen B27; CRP, C-reactive protein; hsCRP, high-sensitivity CRP; ESR, erythrocyte sedimentation rate; BASDI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index; BASMI, Bath Ankylosing Spondylitis Metrology Index; BMD, bone mineral density; mSASSS, modified Stoke Ankylosing Spondylitis Spine Score; NSAIDs, nonsteroidal anti-inflammatory drugs; DMARDs, disease-modifying anti-rheumatic drugs.