Survival benefits and disparities in radiation therapy for elderly patients with pancreatic ductal adenocarcinoma

Figure 1 Flow chart of study enrollment and exclusions. SEER: Surveillance, Epidemiology, and End Results; PDAC: Pancreatic ductal adenocarcinoma; ICD-O-3: International Classification of Diseases for Oncology, Third Edition; RT: Radiation therapy.

Figure 2 Kaplan–Meier curves for overall survival and cancer-specific survival of radiation therapy in elderly patients with pancreatic ductal adenocarcinoma before propensity score matching. A: Kaplan–Meier curve of overall survival; B: Kaplan–Meier curve of cancer-specific survival; OS: Overall survival; CSS: Cancer-specific survival; PSM: Propensity score matching.

Figure 3 Kaplan–Meier curves for overall survival and cancer-specific survival of radiation therapy in elderly patients with pancreatic ductal adenocarcinoma after propensity score matching. A: Kaplan–Meier curve of overall survival; B: Kaplan–Meier curve of cancer-specific survival; OS: Overall survival; CSS: Cancer-specific survival; PSM: Propensity score matching.

Figure 4 Subgroup analysis of radiation therapy or non-radiation therapy for overall survival in elderly patients with pancreatic ductal adenocarcinoma after propensity score matching. SEER: Surveillance, Epidemiology, and End Results; HR: Hazard ratio; RT: Radiation therapy; CI: Confidence interval.

Figure 5 Subgroup analysis of radiation therapy or non-radiation therapy for cancer-specific survival in elderly patients with pancreatic ductal adenocarcinoma after propensity score matching. SEER: Surveillance, Epidemiology, and End Results; HR: Hazard ratio; RT: Radiation therapy; CI: Confidence interval.