| Induction of labour* | ||||
| Yes (n = 155) | No (n = 541) | OR (95% CI) | p value | |
| BMI (kg/m2) | ||||
| <18.5 | 0 (0.0) | 12 (2.2) | - | - |
| 18.5 - 24.9 | 35 (22.6) | 185 (34.2) | Referent | - |
| 25 - 29.9 | 47 (30.3) | 172 (31.8) | 1.44 (0.89 - 2.34) | 0.137 |
| ≥30 | 73 (47.1) | 172 (31.8) | 2.24 (1.43 - 3.53) | 0.000 |
| Caesarean section | ||||
| Yes (n = 214) | No (n = 596) | OR (95% CI) | p value | |
| BMI (kg/m2) | ||||
| <18.5 | 5 (2.3) | 11 (1.9) | 1.57 (0.52 - 4.71) | 0.421 |
| 18.5 - 24.9 | 55 (25.7) | 190 (31.9) | Referent | - |
| 25 - 29.9 | 53 (24.8) | 194 (32.6) | 0.94 (0.62 - 1.45) | 0.791 |
| ≥30 | 101 (47.2) | 201 (33.7) | 1.74 (1.18 - 2.55) | 0.005 |
| Macrosomia (birth weight > 4500 g) | ||||
| Yes (n = 24) | No (n = 780) | OR (95% CI) | p value | |
| BMI (kg/m2) | ||||
| <18.5 | 0 (0.0) | 16 (2.1) | - | - |
| 18.5 - 24.9 | 1 (4.2) | 241 (30.9) | Referent | - |
| 25 - 29.9 | 4 (16.7) | 242 (31.0) | 3.98 (0.44 - 35.9) | 0.218 |
| ≥30 | 19 (79.2) | 281 (36.0) | 16.3 (2.17 - 122.6) | 0.007 |
| Admission to SCN | ||||
| Yes (n = 95) | No (n = 714) | OR (95% CI) | p value | |
| BMI (kg/m2) | ||||
| <18.5 | 3 (3.2) | 13 (1.8) | 1.72 (0.46 - 6.39) | 0.419 |
| 18.5 - 24.9 | 29 (30.5) | 216 (30.3) | Referent | - |
| 25 - 29.9 | 25 (26.3) | 221 (31.0) | 0.84 (0.48 - 1.49) | 0.554 |
| ≥30 | 38 (40.0) | 264 (37.0) | 1.07 (0.64 - 1.80) | 0.791 |
| Neonatal hypoglycaemia | ||||
| Yes (n = 17) | No (n = 793) | OR (95% CI) | p value | |
| BMI (kg/m2) | ||||
| <18.5 | 1 (5.9) | 15 (1.9) | 2.00 (0.23 - 16.8) | 0.534 |
| 18.5 - 24.9 | 8 (47.1) | 237 (29.9) | Referent | - |
| 25 - 29.9 | 3 (17.7) | 244 (30.8) | 0.36 (0.10 - 1.39) | 0.139 |
| ≥30 | 5 (29.4) | 297 (37.5) | 0.50 (0.16 - 1.54) | 0.228 |