Fig. 5

Calibration curves of nomogram for predicting the probability of SI in training set (A) and validation set (B). Internal validation of the nomogram was performed using a corrected calibration curve within 1000 bootstrap samples. The horizontal axis represents the predicted probability of SI. The vertical axis represents the actual SI probability. The diagonal dotted line represents a perfect prediction of an ideal model. The green line represents the performance of the nomogram, of which a closer fit to the diagonal dotted line represents a better prediction. SI: Suicidal ideation.