Kaplan-Meier survival curves, multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between treatment-naive leukocyte telomere length and pancreatic ductal adenocarcinoma. Telomere length was measured as the ratio of telomere to single-copy gene (T/S ratio) and categorized as short (≤0.677), medium (0.678-0.815), and long (>0.815). HRs and 95% CIs were calculated from Cox proportional hazard models, adjusting for age at diagnosis (continuous), sex, tumor stage at diagnosis (resectable, locally advanced, metastatic), body mass index (continuous), personal history of diabetes mellitus (yes, no), and smoking history (never, former, current).