Table 1. Characteristics of Very Preterm Infants With a Very Low Birth Weight and Their Mothers.
| Characteristic | No. (%) | P Value | |
|---|---|---|---|
| Infants of Mothers With Diabetes (n = 3280) |
Infants of Mothers Without Diabetes (n = 73 080) |
||
| Maternal Characteristics | |||
| Maternal age ≥35 y | 1107 (36.7) | 15 616 (22.5) | <.01 |
| Hypertensive disorders of pregnancya | 1106 (34.1) | 15 214 (20.9) | <.01 |
| Antenatal corticosteroids | 2674 (83.5) | 54 307 (76.6) | <.01 |
| Cesarean delivery | 2365 (72.4) | 46 359 (65.3) | <.01 |
| Neonatal Characteristics | |||
| Apgar score <7 at 5 minb | 710 (27.1) | 12 723 (28.1) | .28 |
| Gestational age, No. (%) | |||
| 28-31 wk | 2145 (65.4) | 40 662 (55.6) | <.01 |
| <28 wk | 1135 (34.6) | 32 418 (44.4) | |
| Males | 1707 (52.1) | 38 434 (52.6) | .53 |
| Birth weight, mean (SD) | |||
| Grams | 1081 (262) | 1027 (270) | <.01 |
| z Score | −0.31 (0.91) | −0.28 (0.93) | .04 |
| Small for gestational age | 498 (15.2) | 10 759 (14.7) | .47 |
| Outborn,b,c No./total No. (%) | 196/2634 (7.4) | 4239/46 106 (9.2) | <.01 |
a
Hypertension in pregnancy includes gestational hypertension, preeclampsia, eclampsia, and HELLP syndrome.
b
UK Neonatal Collaborative info unavailable.
c
No. is number in the group and total No. is the total number in the category.