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Table 1 Demographic and clinical data of the rheumatoid arthritis patients and arthritis controls

From: Synovial microparticles from arthritic patients modulate chemokine and cytokine release by synoviocytes

Parameter RA patients (n = 8) AC patients (n = 3)
Age (years) 58 (34–69) 56 (49–68)
Sex (no. of males/females) 4/4 3/0
Disease duration (months) 60 (4–360) 2 (1–12)
Rheumatoid factor 7 positive; 1 negative 1 positive; 2 negative
Tender joint count 9 (5–15) 1 (1–2)
Swollen joint count 11 (5–19) 2 (1–23)
ESR (mm/h) 46 (25–69) 38 (28–43)
Erosive disease 6 positive; 2 negative None
No. of DMARDs 4.5 (1–5) 0
Leukocytes in SF (109/l) 6.3 (4.5–7.0) 4.3 (4.2–4.5)
CRP (mg/l) 34 (8–97) 4 (<3–26)
  1. Results are medians, with ranges in parentheses. AC, arthritis control; CRP, C-reactive protein in plasma; DMARDs, disease-modifying antirheumatic drugs; ESR, erythrocyte sedimentation rate; RA, rheumatoid arthritis; SF, synovial fluid.