Fig. 3

Confusion matrix plots (A) Model 1 and (B) Model 2. Classification tables showing the actual and predicted number of patients with or without different grades of CIP and their corresponding sensitivity, specificity, PPV and NPV, using (A) Model 1 (probability threshold 0.18) and (B) Model 2 (probability threshold 0.10). Nomograms of (C) Model 1 and (D) Model 2. Abbreviations: CIP: checkpoint inhibitor pneumonitis, TP: true positive, FP: false positive, FN: false negative, TN: true negative, PPV: positive predictive value, NPV: negative predictive value. GGO: ground-glass opacity; RLL: right lower lobe