HBsAg positive (N = 3039) | HBsAg negative (N = 36,500) | P value | |
---|---|---|---|
Maternal characteristics | |||
Age (years) | 30.23 ± 4.60 | 29.53 ± 4.38 | < 0.05 |
< 35 | 2473 (81.4%) | 31,460 (86.2%) | < 0.05 |
≥ 35 | 566 (18.6%) | 5040 (13.8%) | 0.12 |
Gravidity | 2.08 ± 1.25 | 1.82 ± 1.07 | < 0.05 |
Parity | 0.50 ± 0.61 | 0.36 ± 0.51 | < 0.05 |
Multipara | 1695 (55.8%) | 24,032 (65.8%) | 0.24 |
Gestational age (weeks) | 38.27 ± 2.19 | 38.55 ± 2.17 | < 0.05 |
Pre-pregnancy weight (kg) | 56.70 ± 8.91 | 56.33 ± 8.76 | 0.76 |
Pre-pregnancy body mass index (kg/m2) | 22.31 ± 3.32 | 22.17 ± 3.55 | 0.56 |
Underweight (< 18.5) | 168 (5.5%) | 3725 (10.2%) | 0.97 |
Normal weight (18.5 ~ 23.9) | 2323 (76.4%) | 22,517 (61.7%) | < 0.05 |
Overweight (24 ~ 27.9) | 386 (12.7%) | 8383 (23.0%) | 0.10 |
Obesity (≥ 28) | 162 (5.4%) | 1875 (5.1%) | 0.54 |
Smoking during pregnancy | 21 (0.7%) | 219 (0.6%) | 0.75 |
Alcohol drinking during pregnancy | 36 (1.2%) | 547 (1.5%) | 0.81 |
Neonatal characteristics | |||
Birthweight (g) | 3086.50 ± 557.18 | 3122.96 ± 531.07 | 0.06 |
Apgar score (1 min) | 9.66 ± 1.25 | 9.70 ± 1.23 | 0.41 |
Apgar score (5 min) | 9.84 ± 1.08 | 9.85 ± 1.08 | 0.25 |
Apgar score (10 min) | 9.88 ± 1.03 | 9.87 ± 1.07 | 0.63 |
Male infants | 1773 (58.3%) | 16,712 (45.8%) | < 0.05 |