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Evaluation of independent prognostic factors in EC. (A) Univariate Cox regression analysis results; (B) multivariate Cox regression analysis results; (C) ROC curve of risk score and clinical features in predicting the accuracy of patients’ survival prognosis; (D) nomogram plotted by the independent factors of patients’ overall survival. HR, hazard ratio; CI, confidence interval; AUC, area under the curve; EC, esophageal cancer; ROC, receiver operating characteristic.
