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Table 1 Patients' characteristics

From: Between adaptive and innate immunity: TLR4-mediated perforin production by CD28nullT-helper cells in ankylosing spondylitis

  Controls (n = 64) Ankylosing spondylitis (n = 65) Psoriatic arthritis (n = 25) Rheumatoid arthritis (n = 72)
Age (years) 49.2 ± 12.4 43.1 ± 10.9 52.2 ± 12 57.9 ± 11
Gender (% female) 50.8 28.4 45.8 75.6
Rheumatoid factor positivity (%) 0.0 n.d. n.d. 77.8
CCP-Ab positivity (%) 0.0 n.d. n.d. 80.5
HLA-B27 positivity (%) n.d. 78.6 31.3 n.d.
Axial involvement (% positive) 0.0 100.0 48.0 0.0
Erythrocyte sedimentation rate >15 mm/hour (% positive) 0.0 62.7 88.2 86.2
C-reactive protein >0.7 μg/dl (% positive) 0.0 26.1 41.7 46.8
  1. CCP-Ab, antibodies directed against cyclic citrullinated peptides; n.d., not determined.