Figure 7. Independence detection analysis and establishment of the prognostic nomogram. (A) The comparison of clinicopathologic features between high-risk and low-risk groups. (B, C) The forest plots for univariate and multivariate COX analyses. (D) The nomogram based on the multivariate COX analysis. (E) Calibration curves for the prediction of 1-, 3- and 5-year overall survival of KRAS-mutated group. (*p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001).