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Table 1 Patient characteristicsa

From: Analysis of IL-17+cells in facet joints of patients with spondyloarthritis suggests that the innate immune pathway might be of greater relevance than the Th17-mediated adaptive immune response

Characteristics Rheumatoid arthritis Spondyloarthritides
  Synovial fluid Peripheral blood Synovial fluid Peripheral blood
  ( n = 7) ( n = 14) ( n = 11) ( n = 30)
Age, years 34.8 ± 12.4 53.4 ± 14.5 32.4 ± 11.0 35.8 ± 13.2
Disease duration, years 4.4 ± 7.6 2.6 ± 8.2 6.6 ± 5.2 6.09 ± 5.91
ESR, mm/hour 59.3 ± 13.8 52.2 ± 26.0 36.8 ± 20.2 27.7 ± 21.5
CRP, mg/mL 6.1 ± 4.9 5.4 ± 1.6 3.6 ± 2.7 2.3 ± 3.2
RF 6/7+ 12/14+ 4/4- 11/11-
Anti-CCP 4/7+ 8/14+ 3/3- 4/4-
HLA-B27 Not done Not done 7/9+ 21/26+
DAS28 score 5.6 ± 1.4 5.4 ± 1.8   
BASDAI score    2.3 ± 2.1 3.9 ± 2.6
DMARDs, n All patients 12 3 None
  1. aESR = erythrocyte sedimentation rate; CRP = C-reactive protein; RF = rheumatoid factor; anti-CCP = anticyclic citrullinated peptide antibodies; HLA-B27 = human leucocyte antigen B27; DAS28 = disease activity score in 28 joints; BASDAI = Bath Ankylosing Spondylitis Disease Activity Index (measured in AS patients only); DMARDs = disease-modifying antirheumatic drugs. Data are expressed as means ± standard deviations unless otherwise indicated.