Fig. 3
Prediction of Positive SARS-CoV-2 PCR by extent of AI-determined airspace disease. A Logistic probability plot of positive SARS-CoV-2 PCR as a function of AI-determined airspace extent. Median airspace extent (40%) had just under 50% probability of a concurrent positive PCR. McFadden R2 = 0.412. B ROC curve for prediction of SARS-CoV-2 PCR positivity in comparison to radiologist impression of airspace extent. Radiologist (AUC = 0.936, 95% CI 0.918–0.960) and AI (AUC = 0.890, 95% CI 0.861–0.920) annotations were both highly accurate