Table 2.

Distribution of serological markers in the study group.

Hepatitis B markers (combinatorial serological profile)	Prevalence (N = 2,533)
	n	%	95% CI
HBsAg only	11	0.4	0.2–0.8
Anti-HBs only	435	17.2	15.8–18.7
Anti-HBc only	100	3.9	3.3–4.8
HBsAg, anti-HBs	2	0.1	0.0–0.3
HBsAg, anti-HBc	10	0.4	0.2–0.7
HBsAg, anti-HBs, anti-HBc	2	0.1	0.0–0.3
Anti-HBs, anti-HBc	108	4.3	3.5–5.1
Any of the following: HBsAg, anti-HBs, anti-HBc	668	26.4	24.7–28.1
The aforementioned markers are absent	1,865	73.6	71.9–75.3