Research Article
Hepatitis B Infection and Mother-to-Child Transmission in Haiphong, Vietnam: A Cohort Study with Implications for Interventions
Table 1
HBsAg prevalence in pregnant women according to their sociodemographic characteristics.
| | Respondent’s demographics | Women tested (), (%) | HBsAg positive (), (% [95% CI]) | value |
| | Age groups (years) | | | 0.994 | | Under 25 years | 365 (21.2) | 39 (10.7 [7.5-13.8]) | | 26-30 years | 596 (34.6) | 63 (10.6 [8.1-13.0]) | | 31-35 years | 477 (27.7) | 52 (10.9 [8.1-13.7]) | | >35 years | 283 (16.5) | 29 (10.2 [6.7-13.8]) | | Employment | | | 0.969 | | Farming | 66 (3.8) | 6 (9.1 [2.1-16.1]) | | Blue-collar worker | 663 (38.5) | 70 (10.6 [8.2-12.9]) | | Clerk/admin/teacher | 583 (33.9) | 64 (10.9 [8.4-13.5]) | | Small trade/housewife | 409 (23.8) | 43 (10.5 [7.5-13.5]) | | Educational level | | | 0.983 | | None-secondary | 66 (3.8) | 7 (10.6 [3.1-18.1]) | | High school | 763 (44.4) | 80 (10.4 [8.3-12.7]) | | College/university or higher | 892 (51.8) | 96 (10.8 [8.7-12.8]) | | Number of pregnancies | | | 0.982 | | 1 | 650 (37.7) | 68 (10.5 [8.1-12.8]) | | 2 | 836 (48.6) | 90 (10.7 [8.7-12.9]) | | ≥3 | 235 (13.7) | 25 (10.6 [6.7-14.6]) | | Average income (USD/month/capita) | | | 0.983 | | <250 | 102 (5.9) | 11 (10.8 [4.7-16.8]) | | 250-<500 | 1428 (83.0) | 151 (10.6 [8.9-12.2]) | | ≥500 | 191 (11.1) | 21 (11.0 [6.5-15.4]) | | Reporting being vaccinated against HBV | | | 0.796 | | Yes | 984 (57.2) | 103 (10.5 [8.5-12.4]) | | No | 737 (42.8) | 80 (10.8 [8.6-13.1]) | | HBV infection known before pregnancy | | | 0.903 | | Yes | 445 (25.9) | 48 (10.8 [7.9-13.7]) | | No | 1276 (74.1) | 135 (10.6 [8.9-12.3]) |
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