Figure 2. Kaplan-Meier plots of overall survival (A) and disease-specific survival (B). The overall survival (OS) of the elderly group was significantly worse in comparison to the non-elderly group (p=0.003). The 3-year OS rates were 71.2% in the elderly group and 92.3% in the non-elderly group. The disease-specific survival (DSS) did not differ significantly between the two groups (p=0.152). The 3-year DSS rates were 83.7% in the elderly group and 94.5% in the non-elderly group.