RRR | 95 % CI | aRRRb | 95 % CI | p-value | |
---|---|---|---|---|---|
Type of labour | |||||
Spontaneous | 1 | ref gpa | 1 | ref gpa | |
Aug amniotomy | 1.76 | (1.6, 1.9) | 1.48 | (1.3, 1.6) | <0.0001 |
Aug oxytocin | 6.17 | (5.7, 6.7) | 2.89 | (2.6, 3.2) | <0.0001 |
Aug amniotomy & oxytocin | 6.51 | (5.9, 7.2) | 2.55 | (2.3, 2.8) | <0.0001 |
IOL PG | 5.84 | (5.0, 6.9) | 3.86 | (3.2, 4.6) | <0.0001 |
IOL amniotomy | 3.08 | (1.8, 5.2) | 2.73 | (1.6, 4.7) | <0.0001 |
IOL oxytocin | 7.37 | (4.4, 12.2) | 4.13 | (2.4, 7.0) | <0.0001 |
IOL PG & amniotomy | 5.05 | (3.9, 6.5) | 2.78 | (2.1, 3.6) | <0.0001 |
IOL PG & oxytocin | 11.83 | (8.4, 16.6) | 4.06 | (2.8, 5.8) | <0.0001 |
IOL amniotomy & oxytocin | 3.86 | (3.3, 4.6) | 1.82 | (1.5, 2.2) | <0.0001 |
IOL PG&amniotomy&oxytocin | 10.19 | (8.8, 11.9) | 3.79 | (3.2, 4.5) | <0.0001 |
Mother’s age in years | |||||
per year older | 1.132 | (1.12, 1.14) | 1.088 | (1.08, 1.10) | <0.0001 |
Epidural analgesia in labour | |||||
No | 1 | ref gpa | 1 | ref gpa | |
Yes | 4.47 | (4.2, 4.7) | 5.68 | (5.3, 6.1) | <0.0001 |
Birthweight | |||||
per 100 g increase | 1.086 | (1.08, 1.1) | 1.101 | (1.09, 1.11) | <0.0001 |
Gestation (completed weeks) | |||||
37 | 0.72 | (0.6, 0.8) | 0.94 | (0.8, 1.1) | 0.523 |
38 | 1.31 | (1.2, 1.4) | 0.85 | (0.8, 0.95) | 0.005 |
39 | 0.87 | (0.8, 0.9) | 0.83 | (0.8, 0.9) | <0.0001 |
40 | 1 | ref gpa | 1 | ref gpa | |
Admission status of mother | |||||
Public | 1 | ref gpa | 1 | ref gpa | |
Private | 2.47 | (2.3, 2.6) | 1.11 | (1.03, 1.2) | 0.003 |