Table 2 Labour, delivery, and maternal and perinatal outcomes (mean ± SD or median [IQR] N (%) unless otherwise specified).
Antenatal BP (mmHg)a | ||||||
|---|---|---|---|---|---|---|
‘Normal BP’ | ‘Elevated BP’ | ‘Stage 1 HTN’ | ‘Stage 2 HTN’ Non-severe | ‘Stage 2 HTN’ Severe | ||
Overall | <120/<80 | 120–129/<80 | 130–139/80–89 | ≥140/≥90 | ≥160/≥110 | |
N = 1520 | (N = 166) | (N = 252) | (N = 614) | (N = 426) | (N = 62) | |
Labour and delivery | ||||||
GA at delivery (wk) | 39 ± 2.3 | 39 ± 2.4 | 39 ± 2.4 | 39 ± 2.4 | 39 ± 2.1 | 38 ± 3.0 |
Labour induction | 526 (34.6%) | 36 (21.7%) | 74 (29.4%) | 202 (34.0%) | 172 (40.4%) | 42 (67.7%) |
Mode of delivery | ||||||
Unassisted vaginal | 798 (52.5%) | 107 (64.5%) | 145 (57.5%) | 327 (53.3%) | 196 (46.0%) | 23 (37.1%) |
Assisted vaginal | 178 (11.7%) | 13 (7.8%) | 31 (12.3%) | 70 (11.4%) | 54 (12.7%) | 10 (16.1%) |
Caesarean | 544 (35.8%) | 46 (27.7%) | 76 (30.2%) | 217 (35.3%) | 176 (41.3%) | 29 (46.8%) |
Maternal complications and co-morbidities | ||||||
Gestational hypertension | 78 (5.1%) | 0/153 | 2/245 | 4/597 (2.3%) | 54/420 (12.7%) | 18/62 (29.0%) |
Pre-eclampsia | 54 (3.6%) | 0/153 | 0/247 | 1/603 | 30/424 (7.0%) | 23/62 (37.1%) |
Maternal death | 0 | 0 | 0 | 0 | 0 | 0 |
Placental abruption | 9 (0.6%) | 1 (0.6%) | 1 (0.4%) | 2 (0.3%) | 3 (0.7%) | 2 (3.2%) |
PPH ≥ 1000 mL | 200 (13.2%) | 15 (9.0%) | 23 (9.1%) | 78 (12.7%) | 68 (15.9%) | 16 (25.8%) |
GDM | 326 (21.4%) | 21 (12.7%) | 42 (16.7%) | 130 (21.1%) | 115 (27.0%) | 18 (29.0%) |
Missing | 38 (2.5%) | 12 (7.2%) | 7 (2.8%) | 16 (2.6%) | 4 (0.9%) | 0 |
Perinatal outcomes | ||||||
Stillbirth | 10 (0.7%) | 1 (0.6%) | 3 (1.2%) | 3 (0.5%) | 2 (0.4%) | 1 (1.6%) |
Neonatal death | 5 (0.3%) | 1 (0.6%) | 1 (0.4%) | 0 | 3 (0.7%) | 1 (1.6%) |
Missing | 18 (1.2%) | 7 (4.2%) | 5 (1.9%) | 4 (0.7%) | 1 (0.2%) | 0 |
Birth at <34 weeks | 36 (2.4%) | 6 (3.6%) | 3 (1.2%) | 16 (2.6%) | 7 (1.6%) | 4 (6.5%) |
Birth at <37 weeks | 99 (6.5%) | 13 (7.8%) | 16 (6.3%) | 36 (5.9%) | 35 (8.2%) | 9 (14.5%) |
Gender | ||||||
Male | 767 (50.2%) | 84 (50.6%) | 137 (54.4%) | 294 (47.9%) | 227 (53.3%) | 25 (40.3%) |
Female | 752 (49.5%) | 82 (49.4%) | 114 (45.2%) | 320 (52.0%) | 199 (46.7%) | 37 (59.7%) |
Birthweight (g) | ||||||
<10th centile [WHO] | 94 (6.2%) | 10 (6.0%) | 13 (5.2%) | 33 (5.4%) | 29 (6.8%) | 9 (14.5%) |
<5th centile [WHO] | 43 (2.8%) | 3 (1.8%) | 7 (2.7%) | 14 (2.3%) | 14 (3.3%) | 5 (22.6%) |
>90th centile [WHO] | 180 (11.8%) | 23 (13.9%) | 33 (13.1%) | 67 (10.9%) | 51 (12.0%) | 6 (9.7%) |
>95th centile [WHO] | 93 (6.1%) | 11 (6.6%) | 15 (5.9%) | 37 (6.0%) | 27 (6.3%) | 3 (4.8%) |
Apgar score <7 at 5 min | 32 (2.1%) | 4 (2.4%) | 7 (2.7%) | 8 (1.3%) | 10 (2.3%) | 3 (4.8%) |
Missing | 26 (1.7%) | 7 (4.2%) | 5 (1.9%) | 11 (1.8%) | 1 (0.2%) | 0 |
Neonatal care admission | 120 (7.9%) | 15 (9.0%) | 14 (5.5%) | 38 (6.2%) | 53 (12.4%) | 9 (14.5%) |
>48 h | 64 (4.2%) | 8 (4.8%) | 11 (4.4%) | 27 (4.4%) | 24 (5.6%) | 6 (9.7%) |
Mechanical ventilation | 40 | 5 | 5 | 14 | 11 | 5 |
