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Table 2 Diagnostic performance of chest CT scan for COVID-19 infection with RT-PCR as the reference standard

From: The role of CT imaging for management of COVID-19 in epidemic area: early experience from a University Hospital

 

Results (n)

Test performance % with 95% CI

All patients (n = 240)

TP

TN

FP

FN

Sensitivity

Specificity

PPV

NPV

Accuracy

 

144

27

69

0

100 (97–100)

28 (19–38)

68 (65–70)

100

71 (65–77)

  1. TP true positive, TN true negative, FP false positive, FN false negative, PPV positive predictive value, NPV negative predictive value, CI confidence interval