Table 1.
Baseline characteristics of patients
| Characteristics | Hemodialysis (n = 425) | Peritoneal dialysis (n = 223) | P |
|---|---|---|---|
| Age (y) | 58.0 ± 12.0 | 53.0 ± 11.0 | < 0.001 |
| Male | 237 (55.8) | 127 (59.2) | 0.402 |
| Body mass index (kg/m2) | 22.6 ± 3.5 | 23.9 ± 3.4 | < 0.001 |
| Diabetes mellitus | 215 (55.0) | 91 (41.2) | 0.001 |
| Duration of dialysis therapy (mo) | 50 (29–83) | 55 (34–86) | 0.377 |
| Systolic BP (mmHg) | 144.0 ± 21.0 | 133.0 ± 22.0 | < 0.001 |
| Diastolic BP (mmHg) | 75.0 ± 14.0 | 80.0 ± 12.0 | < 0.001 |
| Fasting blood glucose (mg/dL) | 146.0 ± 72.0 | 135.0 ± 75.0 | 0.082 |
| BUN (mg/dL) | 66.0 ± 24.0 | 63.0 ± 24.0 | 0.169 |
| Serum creatinine (mg/dL) | 9.0 ± 2.9 | 10.2 ± 3.7 | < 0.001 |
| Hemoglobin (g/dL) | 10.3 ± 1.4 | 10.2 ± 1.5 | 0.373 |
| Serum albumin (g/dL) | 3.7 ± 0.5 | 3.6 ± 0.4 | < 0.001 |
| Serum calcium (mg/dL) | 8.6 ± 1.0 | 8.5 ± 0.9 | 0.326 |
| Serum phosphorus (mg/dL) | 5.0 ± 1.0 | 5.3 ± 1.5 | 0.016 |
| Serum calcium–phosphorus product (mg2/dL2) | 42.7 ± 13.6 | 45.3 ± 13.6 | 0.027 |
| Serum total cholesterol (mg/dL) | 141.0 ± 65.0 | 150.0 ± 75.0 | 0.191 |
| Serum intact PTH (pg/mL) | 147 (65–273) | 222 (110–412) | < 0.001 |
| β2-microglobulin (mg/dL) | 248 (135–414) | 287 (137–569) | 0.043 |
| Serum ferritin (mg/dL) | 62 (45–78) | 67 (52–93) | 0.010 |
| hsCRP (mg/dL) | 0.13 (0.00–1.57) | 0 (0–0.02) | < 0.001 |
| Using high-flux dialysis | 116 (27.3) | ||
| Single-pool Kt/V | 1.6 ± 0.5 | ||
| Total weekly Kt/V | 3.1 ± 1.3 | ||
| Medication | |||
| Calcitriol or vitamin D analogues | 100 (24) | 53 (24) | 0.946 |
| Calcium-containing phosphorus binder | 249 (59) | 116 (52) | 0.109 |
| Non–calcium-containing phosphorus binders | 40 (9) | 16 (7) | 0.336 |
Values for continuous variables are given as mean ± SD and variables without a normal distribution are given as median and interquartile range; values for categorical variables are given as n (%).
BP, blood pressure; BUN, blood urea nitrogen; hsCRP, high-sensitivity C-reactive protein; PTH, parathyroid hormone.