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Receiver operating characteristic of different cut-off at lung ultrasound score for diagnosis of COVID-19 associated pneumonia
| Lung ultrasound score | Se, % | 95% CI | Sp, % | 95% CI | PPV, % | NPV, % |
|---|---|---|---|---|---|---|
| ≥0 | 100.00 | 86.3-100.0 | 0.00 | 0.0-23.2 | 64.1 | |
| >0 | 100.00 | 86.3-100.0 | 57.14 | 28.9-82.3 | 80.6 | 100.0 |
| >1 | 96.00 | 79.6-99.9 | 64.29 | 35.1-87.2 | 82.8 | 90.0 |
| >2 | 88.00 | 68.8-97.5 | 100.00 | 76.8-100.0 | 100.0 | 82.4 |
