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Table 3 Performance of initial RT-PCR and CT in detecting patients who require isolation

From: Evaluation of patients with respiratory infections during the first pandemic wave in Germany: characteristics of COVID-19 versus non-COVID-19 patients

  Results (n) Test performance (%)
TP TN FP FN Sensitivity [95% CI] Specificity [95% CI] PPV [95% CI] NPV [95% CI] Accuracy [95% CI]
Initial PCR 66 106 3 79.5 (66/83)
[69.6–86,8]
100 (106/106)
[96.5–100]
100 (66/66)
[94.5–100]
86.2 (106/123)
[79.0–91.2]
91.0 (172/189)
[86.1–94.3]
Initial CT 75 70 36 8 90.4 (75/83)
[82.1–95.0]
66.0 (70/106)
[56.6–74.4]
67.6 (75/111)
[58.4–75.6]
89.7 (70/78)
[81.1–94.7]
76.7 (145/189)
[70.2–82.2]
  1. TP true positive, TN true negative, FP false positive, FN false negative, PPV positive predictive value, NPV negative predictive value, CI confidence interval.
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