From: Diagnostic accuracy of lung ultrasound for SARS-CoV-2: a retrospective cohort study
 | Sensitivity | Specificity | NPV | PPV | Kappa |
---|---|---|---|---|---|
All ultrasounds, N = 174 | |||||
 Ultrasound SARS-CoV-2 diagnosis | 86.0 | 71.6 | 81.7 | 77.7 | 0.58 |
 Multiple field involvement | 83.9 | 66.7 | 78.3 | 74.3 | 0.51 |
 Posterior field involvement | 71.0 | 70.4 | 67.9 | 73.3 | 0.41 |
 Bilateral lung involvement | 78.5 | 74.1 | 75.0 | 77.7 | 0.53 |
 Bilateral posterior field involvement | 57.0 | 91.4 | 64.9 | 88.3 | 0.47 |
 Any discrete B-lines | 86.0 | 54.3 | 77.2 | 68.4 | 0.41 |
 Any confluent B-lines | 43.0 | 98.8 | 60.2 | 97.6 | 0.40 |
 Any pleural thickening or irregularity | 86.0 | 51.9 | 76.4 | 67.2 | 0.39 |
 No pathologic lung findings | 11.8 | 48.1 | 32.2 | 20.8 | -0.39 |
Ultrasound SARS-CoV-2 diagnosis | |||||
 No ILD, N = 167 | 87.0 | 77.3 | 82.9 | 82.5 | 0.65 |
 No ILD, no HF EF ≤ 35%, N = 158 | 85.4 | 82.4 | 83.6 | 86.8 | 0.70 |
 No ILD, no HF EF ≤ 35%, no immunosuppression, N = 144 | 89.3 | 83.3 | 84.7 | 88.2 | 0.73 |
Complete ultrasounds, N = 174 | 90.9 | 75.6 | 87.2 | 82.0 | 0.67 |