Fig. 4From: A random forest algorithm-based prediction model for moderate to severe acute postoperative pain after orthopedic surgery under general anesthesiaVisualization and performance evaluation of the predictive model based on multivariate logistic regression. (A) The nomogram. (B) The calibration curve in the training set. (C) The calibration curve in the testing set. (D) The decision curve in the training set. (E) The decision curve in the testing setBack to article page