Table 2.

Genotype and allele frequencies of PTPN22 polymorphism in controls and patients

Groups	n	Genotype frequency			Allele frequency		P
		R/R	R/W	W/W	R	W
Controls (%)	100	98 (98)	2 (2)	0 (0)	0.990	0.010	P/C: 0.00001 (OR: 17.81 CI 95%: 4.18-21.86)
IBD patients (%)	164	114 (69.5)	50 (30.5)	0 (0)	0.848	0.152
CD (%)	105	68 (64.8)	37 (35.2)	0 (0)	0.823	0.177
UC (%)	59	46 (78)	13 (22)	0 (0)	0.889	0.111	CD/UC: NS

P: Patients; C: Controls; NS: Not significant.