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Table 4 Median value of titers in AS patients versus controls and results of Z-testing

From: Inflammatory bowel disease serologies in ankylosing spondylitis patients: a pilot study

Antibody Median value of titer in AS patients Median value of titer in control patients Pvalue
IgA ASCA 1.24 1.10 0.28
IgG ASCA 4.70 4.05 0.29
Anti-I2 11.78 7.86 0.0172
Anti-OmpC 8.61 7.70 0.30
Anti-CBir1 16.26 15.05 0.63
ANCA 11.6 12.1 0.65
  1. The median value of Anti-I2 in AS patients is significantly increased when compared to controls (shown in bold and italics).
  2. ANCA = antineutrophil cytoplasmic antibodies; anti-CBir1 = anti-flagellin; anti-OmpC = anti-Escherichia coli outer membrane porin C; AS = ankylosing spondylitis; ASCA = Anti-Saccharomyces cerevisiae antibody.