**Figure 5.** **Independent prognostic value of PRGs-based signature.** (**A**) The distribution and median value of the risk scores. (**B**) The distributions of overall survival status, overall survival, and risk score. (**C**) The AUC values of time-dependent ROC curves for survival prediction. (**D**) Kaplan-Meier survival curves showing the overall survival of high- and low-risk LSCC patients divided according to the risk score (log-rank *P* = 0.007). (**E**) Prognostic value of the risk scores in the univariate Cox regression analysis (HR = 1.566, 95% CI: 1.284–1.909, *P* < 0.001). (**F**) Prognostic value of the risk scores in the multivariate Cox regression analysis (HR = 1.406, 95% CI: 1.126–1.757, *P* = 0.003). (**G**) The nomogram for predicting the 1-year, 3-year, and 5-year overall survival. (**H**) Calibration plot of the nomogram for predicting 1-year, 3-year, and 5-year overall survival.