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Table 2 Positivity of ANAs and anti-DNA Abs before and after IFX

From: Correlation of antinuclear antibody and anti-double-stranded DNA antibody with clinical response to infliximab in patients with rheumatoid arthritis: a retrospective clinical study

   Before IFX After IFX P value a
ANA ≥ 1:40 83/106 77/94 NS
   78% 82%  
  ≥ 1:160 27/106 38/94 0.03
   25% 40%  
anti-DNA ≥ 6 U/ml 3/93 21/80 < 0.001
   3% 26%  
  1. ANA, antinuclear antibodies; anti-DNAs, anti-ds-DNA antibodies; IFX, infliximab; NS, not significant. aAnalyzed with the Fisher Exact test.