Fig. 3

Predictive performance of the nomogram in the training and validation cohorts. (a) and (d) ROC curves of the nomogram in the training and validation cohorts; (b) and (e) Calibration curves of the nomogram in the training and validation cohorts. Nomogram-predicted probability of malignant thyroid nodules is on the X-axis; observed malignant thyroid nodules are shown on the Y-axis; and the grey solid line represents a perfect prediction. (c) and (f) Decision curves of the nomogram for predicting the probability of malignant thyroid nodules in the training and validation cohorts. The horizontal and vertical axes represent the threshold probability and net benefit, respectively. The blue line is the expected net beneft of per patient based on the predictive nomogram