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Table 1 Baseline characteristics of 384 patients with early arthritis

From: Positive anti-citrullinated protein antibody status and small joint arthritis are consistent predictors of chronic disease in patients with very early arthritis: results from the NOR-VEAC cohort

  Mean (SD)/n (%) Median (IQR)
Female gender 217 (56.5)  
Age (years) 45.8 (14.7) 44.8 (34.7-58.1)
Arthritis duration (days) 38.0 (30.0) 31 (10-62)
SJC (0-68) 4.5 (6.7) 2.0 (1-5)
TJC (0-28) 3.2 (5.0) 1.0 (0-4)
ESR (mm/h) 31 (24) 24 (12-48)
ESR >20 mm/h 214 (56.0)  
CRP (mg/l) 32 (47) 15 (5-43)
CRP >10 mg/l 224 (58.3)  
IgM RF positive 38 (11.4)  
ACPA positive 49 (14.3)  
Assessor's global VAS (mm) 36 (21) 32 (19-50)
Patient's global VAS (mm) 52 (25) 53 (35-71)
Joint pain VAS (mm) 51 (26) 52 (29-72)
Fatigue VAS (mm) 40 (29) 40 (11-65)
Morning stiffness >1 hour 195 (50.8)  
DAS28 4.01 (1.34) 3.90 (3.06-4.82)
HAQ (0-3) 0.84 (0.67) 0.75 (0.25-1.25)
SF-36:   
   PCS 33.4 (10.8) 32.8 (25.1-40.4)
   MCS 48.6 (11.4) 50.4 (40.1-57.4)
Ever smoker 236 (61.5)  
  1. Number of patients with missing data: SJC/TJC 0, CRP 0, ESR 2, HAQ 9, CCP 42, IgM RF 51, smoking 3, morning stiffness 9, small joints 0.
  2. ACPA = anti-citrullinated protein antibody; CRP = C-reactive protein; DAS = Disease Activity Score; ESR = erythrocyte sedimentation rate; HAQ = Health Assessment Questionnaire; IQR = inter-quartile range; MCS = Mental Component Summary; PCS = Physical Component Summary; RF = rheumatoid factor; SD = standard deviation; SF-36 = Short Form Health Survey; SJC = swollen joint count; TJC = tender joint count; VAS = visual analogue scale.