**Figure 2.** **Construction of risk model in the GSE40967 cohort.** (**A**) Univariate Cox regression analysis of ERSRGs associated with OS of COAD patients. (**B**) Lasso regression analysis of the ERSRGs based on univariate Cox regression analysis. (**C**) Cross-validation for tuning the parameter selection in the LASSO regression. (**D**) Multivariate cox regression analysis of the ERSRGs based on LASSO regression analysis. (**E**) Distribution of patients based on the risk score. (**F**) Kaplan-Meier curve of survival probability of patients in the high-risk group and low-risk group. Statistical tests were performed using the Chi-square test with statistical significance at *P* < 0.05. (**G**) Survival time and survival status of patients with different risk scores. (**H**) The heatmap of the expression of prognostic ERSRGs between high-risk group and low-risk group. (**I**) ROC curve of risk score and other indicators.