TABLE 4.
Sensitivity | Specificity | PPV | NPV | Accuracy | LR(+) | ||
---|---|---|---|---|---|---|---|
Mild/Moderate | Orange/Red zone | 0.95 | 0.85 | 0.56 | 0.99 | 0.87 | 6.33 |
Severe/Critical | Orange/Red zone | 0.93 | 0.98 | 0.87 | 0.99 | 0.97 | 40.39 |
RT-PCR | Orange/Red zone | 0.87 | 0.80 | 0.85 | 0.83 | 0.84 | 4.47 |
CT | Orange/Red zone | 0.93 | 0.87 | 0.67 | 0.99 | 0.88 | 7.32 |
RT-PCR and/or CT | UFT/Al | 0.87 | 0.80 | 0.97 | 0.35 | 0.84 | 5.47 |
UFT: Urine foaming test; RT-PCR: Real-time polymerase chain reaction; CT: Computerized tomography; PPV: Positive predictive value; NPV: Negative predictive value; LR: Likelihood-ratio.