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Table 1 Correlations between autoantibody levels and markers of inflammation

From: Different properties of ACPA and IgM-RF derived from a large dataset: further evidence of two distinct autoantibody systems

  Erythrocyte sedimentation rate C-reactive protein
Diagnosis group ACPA IgM-RF ACPA IgM-RF
   RA (n = 1,130) 0.16a 0.31a 0.13a 0.28a
   Non-RA (n = 1,190) 0.07b 0.06 0.02 0.06
  1. aP < 0.01; bP < 0.05. ACPA, antibody to citrullinated proteins/peptides; IgM-RF, IgM rheumatoid factor; RA, rheumatoid arthritis.