Clinical characteristics of the study population according to tertiles of ERI.

Data are expressed as means ± SD, medians (interquartile range) or numbers (percentages), as appropriate.ERI, erythropoietin resistance index; BP, blood pressure; CVD, cardiovascular diseases; CCI, Charlson co-morbidity index; Ccr, creatinine clearance; ESA, erythropoiesis-stimulating agent; HD, hemodialysis; hsCRP, high sensitivity C-reactive protein; IV, intravenous; Kt/V: K, dialyzer clearance; t, time; V, volume of water a patient’s body contains; PD, peritoneal dialysis; PTH, parathyroid hormone; SGA, subject global assessment; TSAT, transferrin saturation.Clinical characteristics of the study population according to tertiles of ERI.