Mean birth weight-for-gestational-age z-score | P-value | |||
---|---|---|---|---|
Live births (n=943,274) | Stillbirths (n=3,096) | |||
Preterm (n=46,531) | −0.29 | −1.41 | <0.001 | |
Intrapartum | Antepartum | |||
−1.38 | −1.41 | 0.249 | ||
28-31 weeks (n=4,783) | −0.96 | −1.68 | −1.87 | |
32-33 weeks (n=5,963) | −0.60 | −1.14 | −1.41 | |
34-36 weeks (n=35,785) | −0.16 | −1.33 | −1.01 | |
Term (n=899,812) | +0.03 | −0.55 | <0.001 | |
Intrapartum | Antepartum | |||
−0.05 | −0.59 | <0.001 | ||
Percent of mean live birth weight | ||||
Preterm | 100 (ref) | 89.2 | <0.001 | |
Intrapartum | Antepartum | |||
89.0 | 88.9 | 0.283 | ||
28-31 weeks | 100 (ref) | 90.8 | 87.9 | |
32-33 weeks | 100 (ref) | 92.3 | 89.3 | |
34-36 weeks | 100 (ref) | 86.2 | 89.6 | |
Term | 100 (ref) | 92.7 | <0.001 | |
Intrapartum | Antepartum | |||
98.9 | 92.2 | <0.001 |