Antibodies Recognizing Yersinia enterocolitica Lipopolysaccharides of Various Chemotypes in Synovial Fluids From Patients With Juvenile Idiopathic Arthritis

Table 1

The comparison of clinical data for JIA patients positive and negative for Yersinia Yops antibodies.

	JIA patients		Statistical analysis
	No Yops antibodies were detected in the serum (Ye-)	Yops antibodies were detected in serum (Ye+)
Number of patients ()	27	12	—
Age (mean)	11.1	11.2
Male/female	7/20	5/7
Anti-nuclear antibodies (ANA) (number of patients)	22	9
Number of affected joints mean/median	2.7/2	2.6/2
Disease duration (months) mean/median	4.1/3.2	5.7/4.2
Erythrocyte sedimentation rate (ESR) mean/median	11.8/7	5.2/5.5
C-reactive protein (CRP) mean/median	8.9/4.9	5.9/4.9

: Mann–Withney test; : Fisher’s exact test.