Table 2.

Prevalence of antibodies against the hepatitis B core antigen (anti-HBc).

Variable	n	Prevalence (95% CI)	OR (95% CI)	p	aOR (95% CI)	p
Age ( in years)
<25	30	0 (0–11.6)	0	0.998	0	0.998
25 – 34	183	0.5 (0–3.0)	Reference		Reference
35 – 44	161	3.7 (1.4–7.9)	7.05 (0.84–59.16)	0.072	7.19 (0.85–61.16)	0.071
45 – 54	168	4.8 (2.1–9.2)	9.10 (1.13–73.55)	0.038	8.58 (1.04–70.99)	0.046
≥55	91	12.1 (6.2–20.6)	25.03 (3.18–197.12)	0.002	23.24 (2.9–186.36)	0.003
Sex
Male	148	5.4 (2.4–10.4)	1.48 (0.63–3.48)	0.366	2.03 (0.75–5.47)	0.161
Female	485	3.7 (2.2–5.8)	Reference		Reference
Professional category
Physicians	186	3.2 (1.2–6.9)	Reference		Reference
Nurses	248	4.8 (2.5–8.3)	1.53 (0.56–4.14)	0.407	1.81 (0.59–5.56)	0.298
Other clinical workers	85	3.5 (0.7–10)	1.10 (0.27–4.50)	0.897	1.71 (0.39–7.47)	0.475
Non-clinical workers	114	4.4 (1.4–9.9)	1.38 (0.41–4.62)	0.605	1.69 (0.47–6.00)	0.421
Type of centre
Primary healthcare	299	5.7 (3.3–8.9)	2.18 (0.96–4.96)	0.064	1.73 (0.73–4.09)	0.212
Hospital	334	2.7 (1.2–5.1)	Reference		Reference
All	633	4.1 (2.7–6.0)