Table 1.
Characteristics of the study population (n = 60).
| Variable | Mean ± SD or median [IQR] | Number (%) |
|---|---|---|
| Age (years) | 62.5 [52.5–72.5] | |
| Male sex | 44 (73.3) | |
| Body mass index (kg/m2) | 23.2 [20.8–25.3] | |
| Diabetes mellitus | 23 (38.3) | |
| Hepatic disease | 2 (3.3) | |
| Cardiac disease | 24 (40.0) | |
| PD period (months) | 24 [12–45] | |
| Hemodialysis combination | 13 (21.7) | |
| PD modality: CAPD | 8 (13.3) | |
| PD modality: APD (NIPD) | 21 (35.0) | |
| PD modality: APD (CCPD) | 31 (51.7) | |
| White blood cells (103/µL) | 6.24 [5.13–7.47] | |
| Red blood cells (104/µL) | 350.1 ± 46.2 | |
| Hemoglobin (g/dL) | 10.8 ± 1.3 | |
| Platelets (×104/µL) | 22.9 ± 7.5 | |
| Total protein (g/dL) | 6.3 ± 0.5 | |
| Albumin (g/dL) | 3.3 ± 0.5 | |
| Blood urea nitrogen (mg/dL) | 52.0 [48.0–62.8] | |
| Creatinine (mg/dL) | 10.9 ± 3.2 | |
| C-reactive protein (mg/dL) | 0.15 [0.04–0.48] | |
| Uric acid (mg/dL) | 5.9 [5.0–7.2] | |
| Sodium (mEq/L) | 138.2 ± 4.0 | |
| Potassium (mEq/L) | 4.4 [3.8–5.1] | |
| Chloride (mEq/L) | 99.8 ± 5.0 | |
| Corrected calcium (mg/dL) | 9.1 ± 0.6 | |
| Phosphorus (mg/dL) | 5.6 [4.6–6.0] | |
| Magnesium (mg/dL) | 2.1 [1.8–2.5] | |
| Zinc (µg/dL) | 60.5 [52.0–68.0] | |
| Copper (µg/dL) | 95.5 ± 20.8 | |
| Iron (µg/dL) | 74.5 [52.0–95.8] | |
| Ferritin (mg/mL) | 134 [85–254] | |
| Transferrin saturation (%) | 30.9 [21.2–39.2] | |
| Vitamin B12 (pg/mL) | 384 [275–734] | |
| Folate (ng/mL) | 4.5 [3.5–6.3] | |
| HbA1c (%) | 5.6 [5.0–6.1] | |
| Total carnitine (µmol/L) | 45.2 [36.6–52.7] | |
| Acyl carnitine (µmol/L) | 16.6 [13.3–19.3] | |
| Free carnitine (µmol/L) | 27.5 [22.5–34.0] | |
| Acyl carnitine/free carnitine ratio | 0.5 [0.5–0.7] | |
| Total cholesterol (mg/dL) | 178 ± 47 | |
| HDL cholesterol (mg/dL) | 46 [35–54] | |
| LDL cholesterol (mg/dL) | 97 [69–122] | |
| Triglycerides (mg/dL) | 124 [87–181] | |
| Intact PTH (pg/dL) | 231 [144–336] | |
| ERI (IU/week/kg/(g/dL)) | 7.0 ± 4.4 | |
| Total Kt/V urea | 1.61 [1.40–1.83] | |
| Peritoneal Kt/V urea | 1.07 [0.83–1.36] | |
| Renal Kt/V urea | 0.44 [0.25–0.82] | |
| D/P Cre | 0.66 ± 0.14 | |
| Ejection fraction (%) | 64 [59–68] |
SD: standard deviation; IQR: interquartile range; PD: peritoneal dialysis; CAPD: continuous ambulatory peritoneal dialysis; APD: automated peritoneal dialysis; NIPD: nocturnal intermittent peritoneal dialysis; CCPD: continuous cyclic peritoneal dialysis; HbA1c: hemoglobin A1c; HDL: high-density lipoprotein; LDL: low-density lipoprotein; PTH: parathormone; ERI: erythropoietin resistance index; D/P Cre: 4-h dialysate/plasma creatinine.