Table 4.
Comparing those with a positive diagnostic test for GDM in 2020, with those who had tested negative for GDM following a screen-positive GCT result.
| GDM pos 2020 n = 42 |
GDM neg 2020 n = 167 |
p-Value | |
|---|---|---|---|
| BMI (mean, SD) | 29.4 (6.6) | 26.9 (5.7) | 0.06 |
| Age, years (SD) | 34.(5.7) | 36 (4.9) | 0.13 |
| GA at GCT | 28 (5) | 28 (4.1) | 0.54 |
| Booking weight (mean, SD) | 74.7 (17.8) | 72.2 (16) | 0.1 |
| Infant head circumference centile (mean, SD) | 61 (32) | 75 (26.2) | 0.01 |
| Infant length centile (mean, SD) | 50 (31) | 79.1 (28.8) | 0.02 |
| Birth weight, weight in grams (mean, SD) | 3488 (638) | 3680 (570) | 0.15 |
| PPH (>500 mL), n (%) | 5 (11.9%) | 51 (30.5%) | 0.02 |
| Birth weight > 90th centile, n (%) | 8 (19%) | 46 (27.5%) | 0.26 |
| Gestational age at birth (weeks) mean, SD) | 39.3 (1.5) | 39.7 (1.9) | 0.08 |
| Induction of labour, n (%) | 20 (47.6%) | 58 (34.7%) | 0.03 |
| Mode of delivery | |||
| SVD, n (%) | 19 (45.2%) | 81 (44.3%) | 0.54 |
| Instrumental birth, n (%) | 3 (7.1%) | 22 (37.4%) | 0.28 |
| Caesarean birth, n (%) | 20 (47.6%) | 64 (38.3%) | 0.54 |
| NICU admission, n (%) | 10 (23.8%) | 39 (23.4%) | 0.95 |
GA: gestational age, GCT: glucose challenge test, NICU: neonatal intensive care, PPH: postpartum haemorrhage, SVD: spontaneous vaginal delivery.