Table IV.
Sensitivity, specificity, positive and negative predictive value and likelihood ratio of Doppler tests in prediction of adverse neonatal outcome
| Doppler test | Sensitivity | Specificity | PPV | NPV | LR | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| % | 95% CI | % | 95% CI | % | 95% CI | % | 95% CI | |||
| Neonatal outcome | C/U | 87.8 | 0.74–0.96 | 68.5 | 0.59–0.77 | 51.4 | 0.39–0.64 | 93.7 | 0.86–0.98 | 2.8 |
| MCA RI | 17.5 | 0.07–0.33 | 92.6 | 0.86–0.97 | 46.7 | 0.21–0.73 | 75.2 | 0.67–0.82 | 2.3 | |
| MCA PI | 65.0 | 0.48–0.79 | 75.0 | 0.66–0.83 | 49.0 | 0.35–0.63 | 85.2 | 0.76–0.92 | 2.6 | |
| UA RI | 40.0 | 0.25–0.57 | 87.0 | 0.79–0.93 | 53.3 | 0.34–0.72 | 79.7 | 0.71–0.87 | 3.1 | |
| UA PI | 27.5 | 0.15–0.44 | 88.0 | 0.80–0.93 | 45.8 | 0.25–0.67 | 76.6 | 0.68–0.84 | 2.3 | |
PPV – positive predictive value, NPV – negative predictive value, LR – likelihood ratio, CI – confidence interval, C/U – cerebroplacental ratio, MCA – middle cerebral artery, RI – resistance index, UA – umbilical artery, PI – pulsatility index.