4. Analyses of ‘threshold’ effects for chest CT studies of suspected cases that used the COVID‐19 Reporting and Data System (CO‐RADS).
| CO‐RADS threshold | Studies (n) | Number of participants (cases) | Sensitivity (95% CI) | Specificity (95% CI) |
| 5 | 7 | 2560 (1042) | 67.0% (56.4 to 76.2) | 91.3% (87.6 to 94.0) |
| 4 | 7 | 2560 (1042) | 83.5% (74.4 to 89.7) | 83.6% (80.5 to 86.4) |
| 3 | 9 | 2807 (1139) | 90.7% (85.2 to 94.3) | 69.4% (63.3 to 74.9) |
| 2 | 7 | 2560 (1042) | 94.3% (88.6 to 97.2) | 44.1% (36.5 to 52.0) |
| 1a | ‐ | ‐ | ‐ | ‐ |
| CI: confidence interval;CT: computed tomography | ||||
aWe did not perform meta‐analysis for a CO‐RADS threshold of 1 since at this threshold all sensitivity values are equal to 1, and all specificity values are equal to 0.