Mode of delivery
| | |
Vaginal non-breech | 136/1819 (7.5%) | 1.0 |
Vaginal breech | 52/454 (11.5%) | 1.60 (1.14 to 2.24) |
Caesarean section with labour | 96/1340 (7.2%) | 0.96 (0.73 to 1.25) |
Caesarean section without labour | 92/1921 (4.8%) | 0.62 (0.47 to 0.82) |
Missing data | 178 | |
| | |
Birth order
| | |
Singleton/first of multiples | 306/4219 (7.3%) | 1.0 |
Second or greater of multiples | 91/1493 (6.1%) | 0.83 (0.65 to 1.06) |
Missing data | 0 | |
| | |
1 minute Apgar score
| | |
4–10 | 204/4371 (4.7%) | 1.0 |
<4 | 185/1266 (14.6%) | 3.50 (2.83 to 4.31) |
Missing data | 75 | |
| | |
Gender
| | |
Female | 159/2630 (6.0%) | 1.0 |
Male | 238/3075 (7.7%) | 1.3 (1.06 to 1.60) |
Missing data | 7 | |
| | |
Gestational age (weeks)
| | |
30 | 28/1368 (2.0%) | 1.0 |
29 | 38/1159 (3.3%) | 1.62 (0.99 to 2.66) |
28 | 53/938 (5.7%) | 2.86 (1.80 to 4.56) |
27 | 56/720 (7.8%) | 4.03 (2.54 to 6.41) |
26 | 75/690 (10.9%) | 5.83 (3.74 to 9.09) |
25 | 78/529 (14.7%) | 8.27 (5.30 to 12.89) |
24 | 69/308 (22.4%) | 13.80 (8.71 to 21.86) |
Missing data | 0 | |