ROC analyses for the prediction of overall survival in patients with gastric cancer.

<p>ROC analyses of the sensitivity and specificity for the prediction of overall survival by the combined CXCR4 expression and TNM stage model, the TNM stage model, and the CXCR4 expression model. P values show the area under the ROC curves (AUC) of the combined CXCR4 expression and TNM stage model versus AUCs of the TNM stage model or the CXCR4 expression model. ROC, receiver operating characteristic.