Table 4

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

Antibody

Median value of titer in AS patients

Median value of titer in control patients

P value

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

The median value of Anti-I2 in AS patients is significantly increased when compared to controls (shown in bold and italics).

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.

Mundwiler et al. Arthritis Research & Therapy 2009 11:R177   doi:10.1186/ar2866