Epidemiology and prognostic nomogram for locally advanced gastric signet ring cell carcinoma: A population-based study

Figure 3 Joinpoint analysis of the incidence of gastric signet ring cell carcinoma and gastric adenocarcinoma by age. A: Age < 60 years with gastric signet ring cell carcinoma (GSRC); B: Age < 60 years with gastric adenocarcinoma (GA); C: Age 60-69 years with GSRC; D: Age 60-69 years with GA; E: Age > 70 years with GSRC; F: Age > 70 years with GA. ¹Indicates that the annual percentage change (APC) is significantly different from zero at the alpha = 0.05 level. Final Selected Model: 2 Joinpoints. ²Indicates that the APC is significantly different from zero at the alpha = 0.05 level. Final Selected Model: 1 Joinpoints. APC: Annual percentage change.