| Variables | All complications | Anaesthesia | BT | PPH |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Age (years) |
|
|
|
|
| 15 - 19 | 1.52 (0.54 - 4.25) | 0.26 (0.03 - 2.02) | 1.76 (0.47 - 6.48) | 1.58 (0.33 - 7.35) |
| 20 - 34 | ref | ref | Ref | Ref |
| ≥35 | 1.17 (0.67 - 2.07) | 0.81 (0.40 - 1.60) | 1.75 (0.86 - 3.55) | 1.43 (0.61 - 3.35) |
| Parity |
|
|
|
|
| Primiparous | ref | ref | Ref | Ref |
| Multiparous | 1.96 (1.20 - 3.20) | 1.60 (0.91 - 2.80) | 2.42 (1.18 - 4.93) | 2.02 (0.89 - 4.62) |
| Grand multiparous | 6.90 (2.50 - 14.0) | 3.1 (1.13 - 8.68) | 6.75 (2.18 - 20.83) | 5.70 (1.65 - 19.84) |
| BMI (kg/m2) |
|
|
|
|
| 18.5 - 24.9 | ref | ref | Ref | Ref |
| 25.0 - 29.9 | 1.65 (0.43 - 6.37) | 0.82 (0.42 - 1.63) | 0.86 (0.34 - 2.19) | 1.70 (0.43 - 6.40) |
| ≥30 | 1.21 (0.64 - 2.25) | 1.21 (0.65 - 2.25) | 1.21 (0.66 - 2.81) | 2.60 (0.75 - 9.20) |
| Gestation age |
|
|
|
|
| Term | ref | ref | Ref | Ref |
| Late preterm | 1.16 (0.60 - 2.22) | 1.16 (0.60 - 2.22) | 1.60 (0.68 - 3.72) | 1.02 (0.34 - 3.08) |
| Early preterm | 1.33 (0.63 - 2.78) | 1.33 (0.64 - 2.78) | 2.77 (1.19 - 6.46) | 2.31 (0.87 - 6.15) |
| Anaemia |
|
|
|
|
| No | ref | ref | Ref | Ref |
| Yes | 2.19 (1.33 - 3.63) | 1.13 (0.62 - 2.06) | 2.92 (1.54 - 5.54) | 1.44 (0.66 - 3.14) |
| ANC visit |
|
|
|
|
| ≥4 | ref | ref | Ref | Ref |
| <4 | 1.77 (1.05 - 2.97) | 1.31 (0.72 - 2.39) | 1.96 (1.03 - 3.84) | 2.23 (1.04 - 4.77) |
| Cervical Dilation (cm) |
|
|
| |
| 0 - 3 | ref | ref | Ref | Ref |
| 4 - 9 | 0.81 (0.50 - 1.32) | 0.81 (0.50 - 1.32) | 0.79 (0.4 - 1.54) | 0.72 (0.32 - 1.60) |
| 10 | 0.75 (0.24 - 2.38) | 0.75 (0.24 - 2.38) | 1.42 (0.39 - 5.20) | 1.30 (0.28 - 6.09) |
| Duration of Surgery |
|
|
| |
| <60 min | ref | ref | Ref | Ref |
| ≥60 min | 2.44 (1.52 - 3.92) | 2.33 (1.37 - 3.99) | 2.13 (1.15 - 3.90) | 3.16 (1.51 - 6.61) |
| Birth weight (kg) | ||||
| <2.5 | 1.79 (1.03 - 3.11) | 0.99 (0.51 - 1.95) | 3.60 (1.83 - 7.08) | 1.81 (0.79 - 4.15) |
| 2.5 - 3.9 | ref | ref | Ref | Ref |
| ≥4.0 | 1.05 (0.42 - 2.58) | 1.03 (0.37 - 2.80) | 1.25 (0.35 - 4.46) | 1.58 (0.48 - 5.71) |
| Previous scar |
|
|
|
|
| <2 | ref | ref | Ref | Ref |
| ≥2 | 0.87 (0.38 - 1.96) | 1.09 (0.46 - 2.58) | 2.62 (0.82 - 8.40) | 1.86 (0.58 - 5.91) |
| Preeclampsia |
|
|
|
|
| No | ref | ref | Ref | Ref |
| Yes | 1.18 (0.60 - 2.31) | 1.49 (0.71 - 3.12) | 0.45 (0.13 - 1.54) | 0.45 (0.1 - 1.97) |