Variables | Failed IOL | COR(95%CI) | AOR(95%CI) | |
---|---|---|---|---|
YES | NO | |||
Methods of induction | ||||
Oxytocin | 101 | 183 | 1.3 (0.8,2.0) | 4.2 (2.2,8.1) |
Either combination | 10 | 49 | 0.5 (0.2,1.0) | 0.4 (0.2,0.9) |
prostaglandins | 42 | 99 | 1.00 | 1.00 |
Parity | ||||
Nulliparous | 92 | 144 | 2.0 (1.4,2.9) | 1.9 (1.2,2.9) ** |
Multiparous | 61 | 187 | 1 | |
Gestational age | ||||
≤ 36 | 9 | 52 | 1.00 | * |
37–41 | 112 | 228 | 2.8 (1.4,6.0) | |
≥ 42 | 32 | 51 | 3.6 (1.6,8.4) | |
Indication | ||||
Post term | 30 | 49 | 2.8 (1.3,6.0) | 4.1 (1.8, 9.3) ** |
PROM | 44 | 123 | 1.6 (0.8,3.3) | 0.9 (0.4, 2.0) |
Hypertensive disorder | 67 | 105 | 2.9 (1.4,5.8) | 2.4 (1.5, 5.1) |
Other | 12 | 54 | 1.00 | |
Age | ||||
≤ 30 | 139 | 266 | 1.00 | * |
> 30 | 14 | 65 | 0.4 (0.2,0.8) | |
Duration of induction | ||||
> 18 h | 44 | 73 | 1.4 (0.9,2.2) | 2.0 (1.5,3.5) |
≤ 18 h | 109 | 258 | 1.00 | |
Previous obstetric complications | ||||
Yes | 131 | 257 | 0.6 (0.4,1.0) | |
No | 22 | 74 | 1.00 | * |
Bishop score | ||||
≤ 5 | 78 | 143 | 1.4 (0.9,2.0) | 2.1 (1.3,3.6) |
> 5 | 75 | 188 | 1.00 | |
Birth weight | ||||
< 4000 g | 12 | 30 | 1.00 | * |
≥ 4000 g | 141 | 301 | 0.9 (0.4,1.7) |