Table 2.
Diagnostic accuracy models of CT and CT combined with vital parameters.
| Model | Sensitivity |
Specificity |
PPV |
NPV |
|---|---|---|---|---|
| (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
| CT (baseline) | 0.82 (0.67–0.98) | 0.78 (0.67–0.90) | 0.35 (0.15–0.53) | 0.97 (0.96–1.00) |
| CT (adjusted) | 0.86 (0.71–1.00) | 0.78 (0.57–0.98) | 0.36 (0.16–0.55) | 0.97 (0.95–1.00) |
| Low-risk | 0.76 (0.61–0.91) | 0.83 (0.77–0.90) | 0.33 (0.21–0.46) | 0.97 (0.95–0.99) |
| Intermediate-risk | 0.84 (0.63–1.00) | 0.76 (0.65–0.87) | 0.29 (0.15–0.44) | 0.98 (0.94–1.01) |
| High-risk | 0.89 (0.76–1.00) | 0.68 (0.54–0.83) | 0.54 (0.40–0.69) | 0.94 (0.88–1.00) |
This tables shows the results for different models of diagnostic accuracy (baseline CT and CT adjusted for age, sex, and vital parameters) for all patients regardless of risk group, as well as the accuracy when the adjusted CT model was stratified by the pre-test probability of COVID-19.