Hepatitis B virus prevalence and transmission risk factors in inflammatory bowel disease patients at Clementino Fraga Filho university hospital

Table 1 HBV infection transmission risk factors

Risk factors (n = 176)	n (%)
Blood transfusion	47 (26.7)
Surgery	117 (66.5)
Dialysis	0
Endovenous drug use	8 (4.5)
Tatoo	4 (2.3)
Acupuntura	7 (4.0)
“Piercings”	1 (0.6)
SPL	3 (1.7)
Digestive endoscopes	175 (99.4)

Table 2 Anti-HBc and HBsAg result distribution according to IBD type (n =176)

	Anti-HBc	HBsAg
Positive	17 UC (56.7%)	4 (2.3%)
	13 CD (43.3%)
Negative	146 (83%)	172 (97.7%)

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

Table 4 Non-numeric variables risk factors for HBV transmission

Variable	Anti-HBc	n	Mean	SE	Minimum	Maximum	P
Age (yr)	Positive	30	47.7	11.9	26	78	0.001
	Negative	146	39.0	13.9	18	84
Diagnose time (mo)	Positive	30	114.1	109.3	8	372	0.37
	Negative	146	89.9	90.4	1	600
Colonoscopy number	Positive	30	2.3	1.9	0	10	0.52
	Negative	146	2.1	1.6	1	8