Figure 4:

Receiver-operating characteristic (ROC) curves for predicting the risk of Grade 2+ radiation pneumonitis (RP) at 3 months post-RT. Three depicting models are the LKB NTCP model of Eq. (2.4), and the BN models trained on pre- and mid-treatment data. The dashed line represent the chance line (AUC = 0.50). Optimal cut-off values used for the classifiers were 0.22, 0.50, and 0.54 for the predictions of NTCP_LKB, BN_Pre and BN_Mid models.