Perinuclear anti-neutrophil cytoplasmic antibodies (p-anca) in chronic ulcerative colitis: Experience in a Mexican institution

Table 1 Clinical features in UC patients with positive and negative p-ANCA

Clinical feature	p-ANCA +	p-ANCA -	P value	OR	CI 95%
	n = 41	n = 39
Pancolitis	22	24	0.62	0.72	(0.29-1.76)
Left-sided	19	15
Colectomy	7	7	0.84	0.94	(0.29-2.98)
No colectomy	34	32
EIMs present	14	17	0.52	0.67	(0.27-1.65)
EIMs absent	27	22
Severe	31	10	< 0.0001	9	(3.2-24.7)
No Severe	10	29

OR = odds ratio; CI 95% = Confidential interval 95%; n = Number of patients.