Table 2 Age-specific prevalence of HBsAg (+) among pregnant women born in Taiwan and other Southeast Asia countries
Taiwan | Southeast Asia | Southeast Asia vs. Taiwan | ||
|---|---|---|---|---|
HBsAg(+)/Total (%) | HBsAg(+)/Total (%) | OR (95% CI) | P-value | |
Total | 1597/10327 (15.5 %) | 126/1418 (8.9 %) | 0.53 (0.44–0.65) | <0.001 |
Age (year) | ||||
≦20 | 173/1354 (12.8 %) | 37/332 (11.1 %) | 0.86 (0.59–1.25) | 0.420 |
>20–≦25 | 579/3705 (15.6 %) | 60/760 (7.9 %) | 0.46 (0.35–0.61) | <0.001 |
>25–≦30 | 530/3372 (15.7 %) | 22/245 (9.0 %) | 0.53 (0.34–0.83) | 0.005 |
>30 | 315/1896 (16.6 %) | 7/81 (8.6 %) | 0.48 (0.22–1.04) | 0.063 |
Date of birth | ||||
   Before July 1984 | 1570/10021 (15.7 %) | 107/1273 (8.4 %) | 0.49 (0.40–0.61) | <0.001 |
before 1970 | 285/1909 (14.9 %) | 3/48 (6.3 %) | 0.38 (0.12–1.23) | 0.11 |
1970- before 1978 | 900/5335 (16.9 %) | 34/310 (11.0 %) | 0.61 (0.42–0.87) | 0.007 |
1978- before July 1984 | 385/2777 (13.9 %) | 70/915 (7.7 %) | 0.52 (0.39–0.67) | <0.001 |
   July, 1984 and after | 27/306 (8.8 %) | 19/145 (13.1 %) | 1.56 (0.84–2.91) | 0.163 |
July, 1984 – June, 1986 | 24/210 (11.4 %) | 17/138 (12.3 %) | 1.09 (0.56–2.11) | 0.80 |
July, 1986 and after | 3/96 (3.1 %) | 2/7 (28.6 %) | 12.4 (1.67–91.87) | 0.04a |