Fig. 4
From: Development of a nomogram for predicting the presence of combined pulmonary fibrosis and emphysema
Validation of the nomogram to predict probability of the presence of CPFE. a Discrimination. Area under the receiver operating characteristic curve (AUC) is 0.839 (95% CI 0.764–0.913). b Calibration plot of the nomogram. The horizontal axis represents the predicted probability and the vertical axis represents the actual probability. Perfect prediction would correspond to the 45° broken line. The dotted and solid lines indicate the observed (apparent) nomogram performance before and after bootstrapping (Hosmer–Lemeshow test: P = 0.307)