Table 3.
Chest CT performances regarding the RT-PCR as reference standard within the different participating centers. [N, N]: Numbers in brackets are 95% confidence intervals. (N, N): Numbers in parentheses are raw data used to calculate percentages
| Diagnostic performances of chest CT scan (initial and/or repeated RT-PCR as gold standard) | ||||
|---|---|---|---|---|
| Data analyzed | Sensitivity | Specificity | Positive predictive value | Negative predictive value |
| Overall | 87 [85, 88] (69/79) | 85 [83, 87] (348/408) | 53 [50, 56] (69/129) | 97 [95, 99] (348/358) |
| Center 1 | 83 [80, 87] (10/12) | 77 [73, 80] (27/35) | 56 [53, 58] (10/18) | 93 [91, 95] (27/29) |
| Center 2 | 67 [62, 70] (2/3) | 94 [93, 97] (49/52) | 40 [36, 44] (2/5) | 98 [95, 100] (49/50) |
| Center 3 | 93 [91, 95] (50/54) | 90 [88, 92] (224/250) | 66 [64, 68] (50/76) | 98 [96, 99] (224/228) |
| Center 4 | 82 [78, 86] (18/22) | 80 [77, 83] (47/59) | 60 [57, 63] (18/30) | 92 [90, 94] (47/51) |