CRP and diabetes mellitus: After adjustments for age, sex, dialysis duration, Kt/V, total creatinine clearance, C-reactive protein, body composition parameters, diabetes mellitus, and usage of RAAS blockade (Model 5), R∆TH and ECW/ICW, expressed in the hydration index, showed statistically significant negative associations with PCS, with β = − 1.5 (− 2.8, − 0.1) and β = − 117.2 (− 215.2, − 19.2), respectively.