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. 2020 Jul-Aug;53(4):211–215. doi: 10.1590/0100-3984.2020.0040

Table 2.

Chest CT accuracy for SARS-CoV-2 infection considering typical and indeterminate findings as positive.

Chest CT RT-PCR
Positive Negative Total
Positive 23 25 48
Negative 2 41 43
Total 25 66 91

Sensitivity: 23/25 (92.0%); 95% CI: 74.0-99.0%. Specificity: 41/66 (62.1%); 95% CI: 49.3-73.8%. PPV: 23/48 (47.9%); 95%. CI: 39.8-56.1%. NPV: 41/43 (95.3%); 95% CI: 84.3-98.7%. Accuracy: 64/91 (70.3%); 95% CI: 59.8-79.5%.