Maternal and infant characteristics of 29 626 very low birthweight infants
| Characteristics | Infants with maternal hyperglycaemia in pregnancy (N=682) | Infants without maternal hyperglycaemia in pregnancy (N=28 944) | P value |
| Maternal | |||
| Maternal age (SD) | 33.8±4.8 | 31.2±5.8 | <0.01 |
| Maternal age, missing, n (%) | 8 (1.2) | 803 (2.8) | |
| Singleton, n (%) | 501 (73.5) | 21 652 (74.5) | 0.42 |
| Caesarean delivery, n (%) | 552 (80.9) | 22 694 (78.4) | 0.11 |
| Antenatal steroids, n (%) | 318 (46.6) | 14 223 (49.1) | 0.20 |
| Neonatal | |||
| Male, n (%) | 375 (55.0) | 14 896 (51.4) | 0.07 |
| SGA, n (%) | 222 (32.6) | 9458 (32.7) | 0.33 |
| Apgar score at 1 min, mean (SD) | 5.3±2.4 | 5.3±2.4 | 0.49 |
| Apgar score at 5 min, mean (SD) | 7.4±1.9 | 7.3±1.9 | 0.20 |
| Apgar score at 5 min <7, n (%) | 164 (24.1) | 7588 (26.2) | 0.20 |
| Gestational age (weeks), mean (SD) | 28.1±2.5 | 27.9±2.5 | 0.03 |
| Birth weight (g) | 1045±286 | 1010±293 | <0.01 |
| Measurement at discharge | |||
| Weight (g) | 2798±880 (n=670) | 2716±850 (n=27 406) | <0.01 |
| Length (cm) | 46.6±4.9 (n=633) | 46.2±4.9 (n=25 503) | <0.05 |
| Head circumference (cm) | 34.3±3.1 (n=641) | 34.2±3.1 (n=25 616) | 0.53 |
SGA, small for gestational age.