Development and validation of a nomogram for predicting lymph node metastasis in early gastric cancer

Figure 4 Discrimination and calibration of the model were evaluated. A: The calibration curve for predicting lymph node metastasis in early gastric cancer in the training cohort; B: In the training cohort, the area under the curve (AUC) of this prediction model is 0.75 [95% confidence interval (CI): 0.701-0.789] and the C index of predicting early recurrence is 0.75; C: The calibration curve for predicting lymph node metastasis in early gastric cancer in the testing cohort; D: The AUC of this prediction model is 0.763 (95%CI: 0.687-0.838) and the C index of predicting early recurrence is 0.763.