ALB and chronic kidney disease: Advanced age (p < 0.001), sex (p < 0.001), tumor stage (p < 0.001), CA19-9 (p < 0.001), albumin (p < 0.001), and chronic kidney disease stage 2 (GFR < 90 mL/min/1.37 m2; p = 0.042) were identified as independent prognostic markers for survival in a multivariate analysis.