Table 1 Description of the cohort: singleton births > 28 weeks’ gestation, without major anomalies, with ultrasound at British Columbia Women’s Hospital, April 1, 2000 to March 31, 2011
Maternal-fetal characteristic | Births with ultrasound measurements at BC Women’s Hospital Mean ± SD or n(%) N = 10,366 |
|---|---|
Maternal age, years | 33.0 ± 5.3 |
Nulliparous | 5156 (49.7) |
Diabetes | |
Gestational diabetes | 1373 (13.2) |
Pre-existing diabetes | 147 (1.4) |
Hypertension | |
Gestational hypertension | 472 (4.6) |
Pre-existing hypertension | 221 (2.1) |
Superimposed preeclampsia | 43 (0.4) |
Pre-eclampsia/ HELLP syndrome/ Eclampsia (de novo or superimposed on pre-existing hypertension) | 253 (2.4) |
Caesarean delivery | 3736 (36.0) |
Gestational age at latest scan, completed weeks median [IQR] | 34.3 [31.9, 36.6] |
Gestational age at delivery, completed weeksa | 38.1(±2.2) |
> 41 weeks’ gestation | 93 (0.9) |
Female sex | 5138 (49.6) |
Birthweight (grams) | 3246.3 (±622.0) |
Birthweight <10th%ileb | 1164 (11.0) |
APGAR score at 5 min < 7 | 143 (1.4) |