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Table 1 Baseline characteristics of the patients with rheumatoid arthritis

From: Serum calprotectin (S100A8/9): an independent predictor of ultrasound synovitis in patients with rheumatoid arthritis

Characteristics Rheumatoid arthritis patients (n = 37)
Female (%) 24 (64.9 %)
Age, years 53.56 ± 16.89
RF positivity, n (%) 17 (56.8 %)
Anti-CCP positivity, n (%) 22 (59.5 %)
Calprotectin, mg/L 3.91 ± 5.86
CRP, mg/L 7.55 ± 11.54
ESR, mm/1st hour 16.5 ± 12.37
DAS28-ESR 3.27 ± 1.6
GS syn score (0–39) 3.78 ± 4.24
PD syn score (0–39) 2.19 ± 3.49
GS ten score (0–5) 0.27 ± 0.61
PD ten score (0–15) 0.24 ± 0.68
  1. The values are the mean ± SD (range), if not stated otherwise. RF rheumatoid factor, Anti-CCP anticyclic citrullinated peptide antibody, CRP C-reactive protein, ESR erythrocyte sedimentation rate, DAS28-ESR Disease activity score for 28 joints with ESR, GS syn Grey scale synovitis, PD syn Power Doppler synovitis, GS ten Grey scale tenosynovitis, PD ten Power Doppler tenosynovitis