Characteristics of babies born to mothers who completed the postpartum questionnaire
| Characteristics (n=286) | n (%)* |
| Mean age (days) | 2.8 (range 1–5) |
| Gender | |
| Boy | 156 (55) |
| Girl | 130 (45) |
| Gestational age† | |
| Preterm | 15 (5) |
| Full-term | 271 (95) |
| Post-term | 0 (0) |
| Birth weight‡ | |
| Low | 11 (4) |
| Normal | 261 (91) |
| High | 14 (5) |
| Number of babies | |
| Singleton | 283 (99) |
| Twins | 3 (1) |
| Mode of delivery | |
| Caesarean section | 162 (57) |
| Vaginal delivery | 124 (43) |
| HBV vaccination | |
| Yes | 263 (92) |
| Not yet | 23 (8) |
| BCG vaccination§ | |
| Not yet | 286 (100) |
*Unless otherwise specified.
†Preterm when the gestation age <37 weeks; full-term: 37–42 weeks; post-term: >42 weeks.
‡Low birth weight if weight <2500 g; normal weight: 2500–≤4000 g; overweight: >4000 g.
§BCG vaccine is normally not given to the baby at birth; infants receive BCG vaccine with their other routine vaccinations.
HBV, hepatitis B virus.