Table 2.

Characteristics associated with seroprotection after vaccination schedule for hepatitis B in 77 individuals, central Brazil, 2011

	Univariate analysis			Multivariate analysis*
	Responder	Nonresponder	P value
	N = 53 (%)	N = 24 (%)		OR (95% CI)	P value
Age (years)			0.003
≤ 39	21 (39.6)	1 (4.2)		1.0
40–49	13 (24.5)	8 (33.3)		11.4 (1.1–115.6)	0.04
≥ 50	19 (35.9)	15 (62.5)		14.2 (1.6–124.9)	0.02
Tobacco user	11 (20.8)	12 (50.0)	0.009	1.55 (0.8–8.5)	0.12
Male	20 (37.7)	17 (70.8)	0.007	3.8 (1.2–12.3)	0.02

CI = confidence interval; OR = odds ratio.

^*Logistic regression.