Table 1.

Prevalence of anti-HBc in different age groups

Age groups: % (case/total)
21–30	31–40	41–50	51–60	61–70	71–91	Total
8% (4/508)	2.4% (22/910)	6.0% (94/1559)	11.9% (258/2175)	18.4% (250/1359)	24.5% (143/584)	10.9% (771/7059)