Prognostic Significance of Preoperative Serum Carcinoembryonic Antigen Varies with Lymph Node Metastasis Status in Colorectal Cancer

Figure 4

Integration model for predicting the 5-year survival probability using the nomogram. (a) The 5-year probability of death for a patient is located on the total points axis (bottom) by summing up the total points assigned to each variable at the scales shown above, as indicated with the lines drawn downward to each axis. (b) The result of ROC curves. (c) The calibration curve for the new nomogram model for 5 years. Gray: ideal model; blue: the new nomogram model. CEA: carcinoembryonic antigen; ROC: receiver operating characteristic curve.

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