Fig. 3From: An age-group analysis on the efficacy of chemotherapy in older adult patients with metastatic biliary tract cancer: a Japanese cancer registry cohort studyOverall survival comparison in age groups between BSC and chemotherapy groups after propensity score matching. (a) Analysis of patients aged 70–74, (b) analysis of patients aged 75–79 and (c) analysis of patients aged 80–84. Abbreviations: CI, confidence interval; OS, overall survivalBack to article page