Table 2. Factors associated with hepatitis B virus coinfection.

Variables		HBV coinfection (n = 104)
		Univariate OR (95 % CI)	P value	Multivariate OR (95% CI)	P value
Age (years) (vs. <42a)
	≥42	2.06 (0.91–4.68)	0.083	1.52 (0.63–3.65)	0.353
Male sex (vs. female sex)		0.42 (0.114–1.28)	0.128	0.59 (0.17–2.05)	0.405
Race (vs. foreigner)
	Korean	0.31 (0.04–2.65)	0.283
Sexuality (vs. homosexual)
	Heterosexual	2.38 (0.90–6.27)	0.587
	Bisexual	1.19 (0.37–3.75)	0.05
Smoking history (vs. nonsmoker)
	Current	0.76 (0.33–1.74)	0.799
	Previous	0.47 (0.13–1.71)	0.313
Liver disease (vs. no)
	Liver cirrhosis	64.10 (6.43–639.12)	0.0004
HBV vaccination (vs. yes)
	No	6.28 (1.85–21.32)	0.0005	4.95 (1.43–17.13)	0.001
	Unknown	1.09 (0.18–6.63)	0.286	0.69 (0.10–4.79)	0.17

Values are presented as medians (interquartile ranges) or numbers (percentages).

HBV, hepatitis B virus; OR, odds ratio; CI, confidence interval.

^aMedian criteria