Table 3.

Risk factors according to anti-HBc result-frequency and percentile

		Anti-HBc
		Positive		Negative
Risk factors		n	%	n	%	P
Sex	Men	12	40.0	56	38.0	0.86
	Women	18	60.0	90	61.6
Digestive endoscopy	Yes	16	53.3	91	62.3	0.35
	No	14	46.7	55	37.7
Retosigmoidoscopy	Yes	13	43.3	50	34.0	0.34
	No	17	56.7	96	65.8
Blood transfusion	Yes	10	33.3	37	25.3	0.36
	No	20	66.7	109	74.7
Surgery	Yes	24	80.0	93	63.7	0.085
	No	6	20.0	53	36.3
Surgery to treat IBD complications	Yes	8	33.3	47	50.5	0.13
	No	16	66.7	46	49.5