Occult Hepatitis B Infection among Hemodialysis Patients in Tabriz, Northwest of Iran: Prevalence and Mutations within the S Region

Table 3

Clinical features of study population.

Characteristics	Total	HBV DNA + (OBI)
	(n = 118)	(n = 5) 4.2%
Sex, male/female (%)	75/43 (63.6)	4/1 (80)
Age (years, mean ± SD)	60.8 ± 12.8	65 ± 10.8
Duration of HD (months, mean ± SD)	28.7 ± 15.8	42 ± 17.2
History of transfusion (n, %)	63, 53.4	4, 80
ALT (IU/L)	15.9 ± 7.6	13.4 ± 7.7
AST (IU/L)	25.3 ± 11.2	23.8 ± 9.9
ALP (IU/L)	311.7 ± 205.7	341.2 ± 158
Consumption of alcohol/smoking (%)	0.8/21.2	0/20
Hepatitis B vaccination (n, %)	95, 80.5	4, 80
Anti-HBc ab+ (n, %)	31, 26.3	4, 80
History of member transplant (n, %)	8, 6.8	1, 20
History of diabetes (n, %)	59, 50	2, 40
History of high blood pressure (n, %)	84, 71.2	3, 60
Booster dose of vaccine (n, %)	13, 11	0

SD, standard deviation; n, number; HBV DNA, hepatitis B virus deoxyribonucleic acid; HD, hemodialysis; IU/L, international unit per liter; ALT, alanine amino transferase; AST, aspartate amino transferase; ALP, alkaline phosphatase; anti-HBc, hepatitis B core antibody.