Fig. 4From: A machine learning-based prediction model for postoperative delirium in cardiac valve surgery using electronic health recordsScatter plot of pain score colored by sex (A). Scatter plot of anesthesia duration colored by CPB duration(B). Scatter plot of PH colored by PaCO2 (C). Scatter plot of TBLL colored by serum albumin (D). Scatter plot of serum creatinine colored by BUN (E). The SHAP importance matrix plots of Random Forest Classifier under full feature set (F)Back to article page