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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.