Gastric cancer mortality related to direct radiographic and endoscopic screening: A retrospective study

Figure 1 Survival curves of gastric cancer deaths in all individuals aged 40 to 79 years old who participated in gastric cancer screening in Maebashi City, Japan, in 2006. Survival curves are adjusted for sex and age group (40–59 years and 60–79 years). No significant difference was observed in the 5-year survival rate between the direct radiography and the endoscopy groups (P = 0.285).

Figure 2 Survival curves of gastric cancer deaths in individuals aged 40 to 79 years old who participated in gastric cancer screening in Maebashi City, Japan, in 2006 and did not subsequently receive annual screening. Survival curves are adjusted for sex and age group (40–59 years and 60–79 years). No significant difference was observed in the 5-year survival rate between the direct radiography and the endoscopy groups (P = 0.971).

Figure 3 Survival curves of gastric cancer deaths in individuals aged 40 to 79 years old who participated in gastric cancer screening in Maebashi City, Japan, in 2006 and subsequently received annual screening. Survival curves are adjusted for sex and age group (40–59 years and 60–79 years). No significant difference was observed in the 5-year survival rate between the direct radiography and the endoscopy groups (P = 0.280).

Figure 4 Survival curves of all cancer deaths, other than gastric cancer, in individuals aged 40 to 79 years old who participated in gastric cancer screening in Maebashi City, Japan, in 2006. Survival curves are adjusted for sex and age group (40–59 years and 60–79 years). A: All participants; B: Participants not receiving annual screening; C: Participants receiving annual screening. No significant differences were observed in the 5-year survival rate between the direct radiography and the endoscopy groups in both A and B (A: P = 0.249, B: P = 0.509). A significant difference was observed between the direct radiography and the endoscopy groups in C (P = 0.038).