Diagnostic performance of CT (at any time)
| Study | N | Sens (%) | 95% CI | Spec (%) | 95% CI | FNR (%) | 95% CI | FPR (%) | 95% CI |
| Perry et al 12 | 3132 | 92.9 | 89.7 to 96.2 | 100 | 100 to 100 | 7.08 | 3.8 to 10.3 | 0.00 | 0.0 to 0.0 |
| Backes et al 32 | 247 | 97.6 | 94.4 to 100 | 100 | 100 to 100 | 2.38 | 0.0 to 5.6 | 0.00 | 0.0 to 0.0 |
| Cooper et al 7 | 510 | 92.9 | 79.4 to 100 | 100 | 100 to 100 | 7.14 | 0.0 to 20.6 | 0.00 | 0.0 to 0.0 |
| Pooled (n=3) | 3889 | 94.1 | 91.0 to 96.2 | 100 | 100 to 100 | 5.92 | 3.85 to 8.99 | 0.00 | 0.00 to 0.00 |
FNR, false negative rate; FPR, false positive rate; N, number; Sens, sensitivity; Spec, specificity.