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Diagnostic accuracy of predictive factors in determining successful vaginal delivery
| Parameters | Cut-off | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) | Area under curve |
|---|---|---|---|---|---|---|---|
| FHPD | < 5.5 cm | 97 | 88.1 | 92.9 | 94.9 | 93.6 | 0.977 |
| Cervical length | < 3 cm | 83 | 76.2 | 84.8 | 73.6 | 80.4 | 0.855 |
| Bishop’s score | > 3 | 80.7 | 67.9 | 80.1 | 68.7 | 75.8 | 0.786 |
FHPD foetal head–perineum distance
