Associations of dietary phosphorus-protein ratio, phosphorus-energy ratio, and protein-energy ratio with mortality in peritoneal dialysis patients: a retrospective cohort study (opens in new tab)

BackgroundOptimal nutritional management in patients undergoing peritoneal dialysis (PD) requires balancing phosphorus restriction with adequate protein and energy intake. Nutrient density-based indicators, including the phosphorus-protein ratio, phosphorus-energy ratio, and protein-energy ratio, may better capture dietary structure than absolute nutrient intake; however, their prognostic significance in PD patients remains unclear.MethodThis retrospective cohort study included adult patients...