Fig. 3

Survival rates of gastric cancer patients with different screening histories. Patients with gastric cancer detected by endoscopic and radiographic screenings were divided into 4 categories: (1) patients without screening history; (2) patients who had screening 1 year before diagnosis; (3) patients who had screening 2 years before diagnosis; (4) patients who had screening 3 years before diagnosis. Patients without screening history were included as well as individuals who had screening history 4 or more years before diagnosis. Screening history was limited to the same method of which gastric cancer was diagnosed. a Survival rates of gastric cancer detected by endoscopic screening. The 5-year survival rates among the 4 groups were follows: patients without screening history = 92.1 ± 0.1% (95% CI: 89.7–94.0); patients who had endoscopic screening 1 year before diagnosis = 98.1 ± 0.6% (95% CI: 96.6–98.9); patients who had endoscopic screening 2 years before diagnosis = 97.2 ± 1.6% (95% CI: 91.4–99.1); patients who had endoscopic screening 3 years before diagnosis = 92.6 ± 0.4% (95% CI: 81.4–97.2). b Survival rates of gastric cancer detected by radiographic screening. The 5-year survival rates in the 4 groups were follows: patients without screening history = 87.6 ± 2.7% (95% CI: 81.0–92.0); patients who had radiographic screening 1 year before diagnosis = 93.0 ± 1.7% (95% CI: 88.7–95.8); patients who had radiographic screening 2 years before diagnosis = 95.1 ± 3.4% (95%CI: 91.4–99.1); and patients who had radiographic screening 3 years before diagnosis = 92.9 ± 6.9% (95% CI: 59.1–99.0)