Abstract
To explore the impact of age on all-cause death and cancer-specific death in patients with pancreatic duct adenocarcinoma (PDAC) undergoing surgery.Individuals with PDAC undergoing surgery between 2004 and 2013 (N = 11,138) were retrospectively studied from the Surveillance, Epidemiology, and End Results (SEER) cancer registry database. The impact of age on all-cause death and cancer-specific death was assessed using Cox regression model and competing risk model respectively.Multivariate Cox regression analysis indicated that the risks of all-cause death increased with age: hazard ratios (95% confidence interval, 95%CI) were 1.10 (1.04–1.17), 1.31 (1.23–1.38), 1.47 (1.35–1.61) for groups 61–70 years, 71–80 years, and >80 years, respectively, compared with ≤60 years. Multivariate competing risk analysis indicated that the risk of cancer-specific death was similar between patients ≤60 years and 61–70 years (subhazard ratio 0.93; 95% confidence interval 0.87–1.00), but decreased in patients 71–80 years (subhazard ratio 0.84; 95%CI 0.79–0.90) and >80 years (subhazard ratio 0.76; 95%CI 0.68–0.85).Age at diagnosis appeared to be an independent predictor of prognosis, with reverse impacts on all-cause death and cancer-specific death.
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