Prediction model of stress ulcer after laparoscopic surgery for colorectal cancer established by machine learning algorithm

Figure 1 Nomogram for predicting postoperative stress ulcer in colorectal cancer patients. HSP70: Heat shock protein 70; HSP90: Heat shock protein 90; GAS: Gastrin.

Figure 2 Validation of the nomogram by the receiver operating characteristic curve. A: The training cohort; B: The validation cohort. AUC: Area under the curve.

Figure 3 Calibration plot of the nomogram for the probability of metastasis. A: The training cohort; B: The validation cohort.

Figure 4  Prediction model decision curve analysis diagram.