From: Seroprevalence of hepatitis B surface antigenemia and its effects on hematological parameters in pregnant women in Osogbo, Nigeria
HBsAg
Age (years)
Total
15-19
20-24
25-29
30-34
35-39
>40
Positive
1
4
13
14
0
33
(14.3%)
(10.5%)
(16.9%)
(23.3%)
(6.3%)
(0%)
(16.5%)
Negative
6
34
64
46
15
2
167
(85.7%)
(89.5%)
(83.1%)
(76.7%)
(93.7%)
(100%)
(83.5%)
7
38
77
60
16
200