Table 3.
ROC curve analysis parameters for the total collected samples (n = 98), according to the food and drug administration (FDA) recommended neutralization titer (1:160). Results from SARS-CoV-2 original strain and SARS-CoV-2 British variant strain VNT analysis are reported in different columns.
| SARS-CoV-2 Original strain |
SARS-CoV-2 British variant strain |
||
|---|---|---|---|
| FDA neutralizzation titer (1:160) | Sensitivity | 88.6% | 82% |
| Specificity | 70.4% | 84.8% | |
| Cut-off | 408.6 BAU/ml | 713.6 BAU/ml | |
| Area under ROC curve (AUC) | 0.8990 | 0.8966 | |
| 95% confidence interval | 0.8355–0.9625 | 0.8334–0.9598 | |