Table 2.
Patient characteristics
| Characteristic | Patients (n=1237), n (%) | Measurements (n=3358) |
|---|---|---|
| Age at start of RRT (yr) | ||
| 0–2 | 402 (32.5) | 1416 |
| 3–5 | 185 (15.0) | 464 |
| 6–12 | 407 (32.9) | 1021 |
| 13–17 | 243 (19.6) | 457 |
| Age at measurement (yr) | ||
| 0–2 | 35 (2.9) | 81 |
| 3–5 | 112 (9.1) | 335 |
| 6–12 | 361 (29.1) | 1047 |
| 13–17 | 729 (58.9) | 1895 |
| Sex (%) | ||
| Male | 741 (59.9) | 2033 |
| Female | 496 (40.1) | 1325 |
| Treatment modality at start of RRT | ||
| Hemodialysis | 265 (21.4) | 619 |
| Peritoneal dialysis | 651 (52.7) | 2024 |
| Transplantation | 317 (25.6) | 709 |
| Unknown/missing | 4 (0.3) | 6 |
| Primary renal disease | ||
| Congenital anomalies of the kidney and the urinary tract | 549 (44.4) | 1354 |
| GN | 114 (9.2) | 240 |
| Cystic kidneys | 128 (10.4) | 363 |
| Hereditary nephropathy | 182 (14.7) | 757 |
| Ischemic renal failure | 26 (2.1) | 62 |
| Hemolytic-uremic syndrome | 36 (2.9) | 91 |
| Metabolic disorders | 39 (3.1) | 80 |
| Vasculitis | 14 (1.1) | 33 |
| Miscellaneous | 79 (6.4) | 217 |
| Unknown/missing | 70 (5.7) | 161 |
| Transplant type | ||
| Deceased donor | 688 (55.6) | 1971 |
| Living donor | 454 (36.7) | 1153 |
| Unknown donor | 95 (7.7) | 234 |
| eGFR (ml/min per 1.73 m2) | ||
| Median (interquartile range) | 62 (49, 78) | |
| ≥90 | 153 (12.4) | 388 |
| 60–89 | 529 (42.7) | 1370 |
| 45–59 | 313 (25.3) | 920 |
| 30–44 | 169 (13.7) | 487 |
| ≤29 | 73 (5.9) | 193 |
| Calcium (mg/dl) | ||
| Mean (SD) | 9.56 (0.37) | |
| SD score, mean (SD) | −0.07 (1.16) | |
| Phosphorus (mg/dl) | ||
| Mean (SD) | 4.03 (0.50) | |
| SD score, mean (SD) | −0.50 (0.98) | |
| PTH, mean (SD) (pg/ml) | 111 (162) | |
| Height SD score, mean (SD) | −1.87 (0.79) |
PTH, parathyroid hormone.