| Medical/surgical history | HBV | ||
| Negative | Positive | p | |
| Previous HBV serological status of the pregnant woman | |||
| Unknown | 163 | 7 | 0.0001* |
| Negative | 27 | 0 | |
| Positive | 0 | 4 | |
| Previous HIV serological status of the pregnant woman | |||
| Unknown | 13 | 1 | 0.34 |
| Negative | 174 | 10 | |
| Positive | 3 | 0 | |
| Previous HBV vaccination |
| ||
| No | 188 | 11 | 0.5 |
| Yes | 2 | 0 | |
| Partner’s HBV serological status | |||
| Unknown | 176 | 9 | 0.4 |
| Negative | 14 | 2 | |
| Number of sexual partners in life | |||
| 1 | 79 | 3 | 0.01* |
| 2 | 86 | 4 | |
| 3 | 18 | 3 | |
| 4 | 7 | 1 | |
| Sexually transmitted infections (gonorrhoea, chlamydia or syphilis) | |||
| No | 150 | 7 | 0.37 |
| Yes | 40 | 4 | |
| Manucure using shared equipment | |||
| No | 121 | 4 | 0.48 |
| Yes | 69 | 7 | |
| Scars |
| ||
| No | 89 | 4 | 0.79 |
| Yes | 101 | 7 | |