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Table 1 Baseline characteristics of the 314 patients included in the VErA cohort (American College of Rheumatology criteria at 2-year follow up)

From: Association between the TNFRII 196R allele and diagnosis of rheumatoid arthritis

Parameter RA (n = 176) Non-RA (n = 138)
Age (years; mean ± SD [range]) 52.3 ± 14.8 (20–84) 51 ± 14.2 (19–84)
Disease duration (months; mean ± SD [range]) 4 ± 1.7 (0.9–6) 4.2 ± 1.7 (1–6)
Disease Activity Score (mean ± SD [range]) 3.5 ± 1.3 (0.5–7.5) 2.5 ± 1 (0.4–5.9)
ESR (mm 1st hour; mean ± SD [range]) 29.7 ± 25.4 (2–110) 21.8 ± 22.9 (2–110)
CRP (mg/l; n < 5, mean ± SD [range]) 24.8 ± 34.8 (2–206) 15.8 ± 24.8 (1.5–128)
RF (IgM isotype; % of positivity) 35.2 7.9
Anti-CCP (% of positivity) 39.2 3.6
HLA-DR1 (%) 13 18.5
HLA-DR4 (%) 33 20.7
  1. CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; RA, rheumatoid arthritis; RF, rheumatoid factor; SD, standard deviation.