Development and Validation of a Prediction Pneumothorax Model in CT-Guided Transthoracic Needle Biopsy for Solitary Pulmonary Nodule
Figure 4
Calibration curves of the model and the validation. (a) Calibration curve of the model in the derivation cohort (Emax = 0.226, Eavg =0.021, P = 0.935). (b) Calibration curve of the model in the validation cohort (Emax = 0.025, Eavg =0.009, P = 0.984). Calibration curve shows the calibration of the model in terms of the agreement between the predicted risks of pneumothorax post-CT-TNB and observed outcomes of pneumothorax post-CT-TNB. The y-axis represents the actual pneumothorax rate post-CT-TNB. The x-axis represents the predicted risk of pneumothorax post-CT-TNB. The shadow line represents a perfect prediction by an ideal model. The dotted line represents the performance of the model, of which a closer fit to the shadow line represents a better prediction.