Table 3 The effects of age on HBV infection and the prevalence of IAHBC.

From: Prevalence and influential factors of isolated hepatitis B core antibody positivity in a Chinese adult population

Age

n (%)

Current Infection [n, (%)]

Previous Infection [n, (%)]

IAHBc [n, (%)]

15–19

682 (1.11)

2 (0.29)

8 (1.17)

0

20–29

5079 (8.29)

113 (2.22)

255 (5.02)

13 (0.26)

30–40

7460 (12.18)

445 (5.97)

1933 (25.91)

228 (3.06)

41–50

9329 (15.23)

840 (9.00)

4548 (48.75)

850 (9.11)

51–60

14,572 (23.79)

1142 (7.84)

7836 (53.77)

1807 (12.40)

61–70

12,060 (19.69)

930 (7.71)

7142 (59.22)

1979 (16.41)

71–80

8972 (14.65)

569 (6.34)

5870 (65.43)

1895 (21.12)

81–101

3093 (5.05)

134 (4.33)

2191 (70.84)

768 (24.83)

z/χ2

 

365.39

8342.36

2741.77

P value

 

 < 0.001

 < 0.001

 < 0.001