Table 4 Sensitivity, specificity, PPV, NPV, and diagnostic accuracy of different sonographic parameters for prediction of adverse intrapartum outcomes
Cut-off points | Cut of point | Sensitivity | Specificity | PPV* | NPV* | accuracy |
|---|---|---|---|---|---|---|
FHR abnormality by CTG | ||||||
Umbilical artery PI | 1.005 | 63.89 | 68.42 | 38.89 | 85.71 | 67.33 |
Middle cerebral artery PI | 1.135 | 58.33 | 78.95 | 46.67 | 85.71 | 73.9 |
Cerebroplacental ratio | 1.205 | 63.89 | 76.32 | 46 | 87 | 73.3 |
CS delivery for IFC | ||||||
Umbilical artery PI | 1.015 | 71.43 | 62.86 | 27.78 | 91.67 | 64.29 |
Middle cerebral artery PI | 1.25 | 85.71 | 65.71 | 33.33 | 95.83 | 69.05 |
Cerebroplacental ratio | 1.22 | 71.43 | 71.43 | 33.33 | 92.59 | 71.43 |