Clinicopathological characteristics of patients
tumor
TUMOR
8583 individuals with GBC between 2010 and 2017 were enrolled in the primary cohort. According to the exclusion criteria, 6452 inapplicable patients were screened out, including 2779 young patients (< 65), 866 patients without a pathological diagnosis, 1331 patients with unknown tumor grade, 436 patients with unknown TNM stage, 897 patients with unknown tumor size, 14 patients with unknown surgery information and 129 patients’ survival period of under one month or indeterminate duration of survival. As a result, 2131 elderly patients with GBC were finally identified and randomly allocated to the training cohort (1492, 70%) and validation cohort (639, 30%). The clinicopathological characteristics of enrolled patients in both cohorts were summarized in Clinicopathological characteristics of elderly patients with GBC.