Diagnostic accuracy for COVID-19
| Lung ultrasound versus PCR | CT versus PCR | Lung ultrasound versus COVID-19 diagnosis# | |
| Sensitivity % (95% CI) | 91.9 (84.0–96.7) | 88.4 (79.7–94.3) | 90.1 (82.5–95.2) |
| Specificity % (95% CI) | 71.0 (61.1–79.6) | 82.0 (73.1–89.0) | 80.0 (69.9–87.9) |
| Positive likelihood ratio | 3.2 (2.3–4.3) | 4.9 (3.2–7.5) | 4.5 (2.9–6.9) |
| Negative likelihood ratio | 0.1 (0.06–0.24) | 0.14 (0.08–0.26) | 0.12 (0.07–0.2) |
| PPV % (95% CI) | 73.2 (66.6–78.8) | 80.9 (73.4–86.6) | 84.2 (77.7–89.2) |
| NPV % (95% CI) | 91.0 (83.1–95.4) | 89.1 (82.0–93.7) | 90.8 (81.7–95.6) |
| Accuracy % (95% CI) | 80.7 (74.2–86.1) | 85.0 (79.0–89.8) | 82.8 (76.6–87.9) |
CT: computed tomography; COVID-19: coronavirus disease 2019; PPV: positive predictive value; NPV: negative predictive value; CI: confidence interval. #: According to multidisciplinary team, COVID-19 is highly likely.