Development and validation of a prognostic nomogram for colorectal cancer after surgery

Figure 1 Nomogram for predicting overall survival rate of colorectal cancer patients after surgery. The nomogram incorporated race, T stage, log odds of positive lymph nodes, M stage, age, carcinoembryonic antigen, and tumor deposit. It predicted the overall survival at 1, 3, and 5 years after surgery. CEA: Carcinoembryonic antigen; LODDS: Log odds of positive lymph nodes; TD: Tumor deposit.

Figure 2 Area under the receiver operating characteristic curve. A: 1-year overall survival (OS) rate predicted by the nomogram in the training set; B: 3-year OS rate predicted by the nomogram in the training set; C: 5-year OS rate predicted by the nomogram in the training set; D: 1-year OS rate predicted by the nomogram in the validation set; E: 3-year OS rate predicted by the nomogram in the validation set; F: 5-year OS rate predicted by the nomogram in the validation set.

Figure 3 Calibration curves of the nomogram for predicting the overall survival. A: At 1 year in the training set; B: At 3 years in the training set; C: At 5 years in the training set; D: At 1 year in the validation set; E: At 3 years in the validation set; F: At 5 years in the validation set.