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Table 4 Performance results of the three radiologists for differentiation between COVID-19 and non-COVID-19 viral pneumonias

From: Diagnostic performance of chest CT in differentiating COVID-19 from other causes of ground-glass opacities

  TP TN FP FN Sensitivity (95% CI) Specificity
(95% CI)
PPV
(95% CI)
NPV
(95% CI)
Accuracy (95% CI)
Radiologist 1 69 16 20 11 86.25% (77–93%) 44.4% (28–62%) 77.5% (72–82%) 59.3% (43–74%) 73.3% (64–81%)
Radiologist 2 72 22 14 8 90% (81–95%) 61.1% (43–77%) 83.7% (77–88.6%) 73.3% (57–85%) 81% (73–88%)
Radiologist 3 61 11 25 19 76.25% (65–85%) 30.5% (16–48%) 70.1% (65–76%) 36.7% (23–52%) 62% (52–71%)