Fig. 4

Calibration curve of the nomogram for non-severe CAP progression risk prediction in the training set (A) and in the validation set (B) separately. The X-axis indicates the probability of clinical deterioration in non-severe CAP patients predicted by the nomogram, and the y-axis indicates the probability of clinical deterioration in CAP patients actually occurring. The dotted line represents the ideal performance, and the solid line represents the performance of the nomogram. The closer to the dotted line, the better the prediction effect