| Variable | Cases | Controls | OR (95% CI) | P value | ||
| Yes n (%) | No n (%) | Yes n (%) | No n (%) | |||
| Acute foetal distress | 16 (26.2) | 45 (73.8) | 19 (15.5) | 103 (84.4) | 2.01 (0.94 - 4.27) | 0.044 |
| CPD | 6 (9.8) | 55 (90.2) | 4 (3.3) | 118 (96.7) | 3.32 (0.90 - 12.26) | 0.065 |
| Obstructed labour | 2 (3.2) | 59 (96.2) | 2 (1.6) | 120 (98.4) | 2.09 (0.29 - 15.22) | 0.397 |
| Previous scar | 4 (6.5) | 57 (93.4) | 22 (18.3) | 100 (82.0) | 0.33 (0.11 - 0.99) | 0.030 |
| Cervical dystocia | 3 (4.9) | 58 (95.1) | 4 (3.4) | 118 (96.7) | 1.57 (0.34 - 7.25) | 0.416 |