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Table 1 Clinical and laboratory characteristics in patients with rheumatoid arthritis (RA) and osteoarthritis (OA), and healthy control (HC) subjects.

From: Interleukin-29 modulates proinflammatory cytokine production in synovial inflammation of rheumatoid arthritis

Parameter RA (n = 54) OA (n = 20) HC (n = 60)
Age (y) 48.2 (17-65) 61 (57-82) 43.4 (24-64)
Sex (female/male) 34/6 24/4 20/5
Median age at onset (y) 40 (13-63) - -
Median disease duration (m) 36 (3-444) - -
Number of tender joints 6.50 (0-28) - -
Number of swollen joints 1.50 (0-28) - -
ESR (mm/h) 37.5 (10-125) - -
CRP (mg/l) 10.32 (2.97-84.5) - -
RF (U/I) 76.4 (10.3-954) - -
DAS28-ESR 4.58 ± 2.08 - -
BMI (kg/m2) 22.45 (16.65-28.55) - 22.91 (17.33-26.17)
Total cholesterol (mmol/l) 4.41 (2.55-6.16) - 5.19 (3.9-7.1)
Triglycerides (mmol/l) 1.44 (0.49-2.15) - 1.46 (0.84-3.11)
  1. The values shown represent the median and the ranges. BMI, body mass index; CRP C-reactive protein; DAS28, 28-joint Disease Activity Score; ESR, erythrocyte sedimentation rate; RF, rheumatoid factor.