Age (years) |
12–25 | 98.4 | 1.6 | 1.0 (0.94 to 1.07) | |
26–35 | 98.4 | 1.6 | 1.0 (0.92 to 1.07) | |
>35 | 98.4 | 1.6 | | |
Parity |
Multiparous | 98.4 | 1.6 | 1.0 (0.96 to 1.05) | |
Primiparous | 98.4 | 1.6 | | |
Country of birth |
Other | 98.4 | 1.6 | 1.0 (0.93 to 1.10) | |
China/Vietnamese | 98.4 | 1.6 | | |
Gestational diabetes |
No | 98.4 | 1.6 | 1.0 (0.92 to 1.18) | |
Yes | 98.4 | 1.6 | | |
Hypertensive disorder of pregnancy |
No | 98.5 | 1.5 | 1.0 (0.86 to 1.35) | |
Yes | 98.5 | 1.5 | | |
Level hospital of birth |
1 | 98.6 | 1.4 | 1.1 (0.74 to 1.72) | |
2 | 98.5 | 1.5 | 1.2 (0.78 to 1.75) | |
3 | 98.4 | 1.6 | 1.1 (0.76 to 1.68) | |
4 | 98.4 | 1.6 | 1.1 (0.76 to 1.69) | |
5 | 98.4 | 1.6 | 1.2 (0.78 to 1.72) | |
6 | 98.4 | 1.6 | | |
Hospital type |
Public | 98.4 | 1.6 | 1.0 (0.96 to 1.08) | |
Private | 98.5 | 1.5 | | |
Onset of labour |
Spontaneous | 98.4 | 1.6 | 1.0 (0.97 to 1.08) | |
Induced | 98.5 | 1.5 | | |
Delivery type |
Normal vaginal delivery | 98.5 | 1.5 | 0.87(0.62 to 1.23) | |
Vaginal breech | 98.7 | 1.3 | 1.1 (1.01 to 1.16) | |
Instrumental delivery | 98.3 | 1.7 | | |
Epidural usage |
No epidural | 98.5 | 1.5 | 1.0 (0.95 to 1.09) | |
Epidural | 98.6 | 1.6 | | |
Gender of baby |
Female baby | 98.7 | 1.3 | 1.5 (1.44 to 1.58) | 1.5 (1.44 to 1.58) |
Male baby | 98.1 | 1.7 | | |
Birth weight centile >90th |
Yes | 98.4 | 1.6 | 1.0 (0.95 to 1.12) | |
No | 98.4 | 1.6 | | |