Characteristics and prognosis of gastric cancer in patients aged ≥ 70 years

Figure 1 Overall survival curves for all patients grouped by age. Patients aged ≥ 70 years demonstrated a significantly lower 5-year OS rate than the younger and middle-aged patients (elderly vs middle-aged vs younger patients, 22.0% vs 36.6% vs 38.0%, respectively). EG: Elderly group; MG: Middle-aged group; YG: Younger group.

Figure 2 Overall survival curves for patients with tumor–node–metastasis II and III cancer. In the tumor-node-metastasis (TNM)-stratified analysis, the differences in overall survival (OS) were only observed in patients with TNM stage II and III cancer. A: Patients with II cancer; B: Patients with III cancer. EG: Elderly group; MG: Middle-aged group; YG: Younger group.

Figure 3 Cancer-specific survival of each age group. When deaths caused by factors other than gastric cancer were excluded, there were no significant differences in cancer-specific survival among the three age groups. EG: Elderly group; MG: Middle-aged group; YG: Younger group.

Figure 4 Overall survival curves for patients grouped by chemotherapy. In the age-stratified analysis, chemotherapy was a prognostic factor for the younger and middle-aged patients, but not for the elderly patients. A: All patients; B: Younger group; C: Middle-aged group; D: Elderly group.