Table 1.
Patient and treatment baseline characteristics.
| Total population | BMI < 2.5th percentile | BMI 2.5th–85th pct | BMI > 85th pct | P | |
|---|---|---|---|---|---|
| N = 1001 | n = 89 | n = 715 | n = 197 | ||
| Country GNI per capita (1000$) | 27.1 ± 13.6 | 24.0 ± 13.2 | 27.0 ± 13.4 | 28.6 ± 14.5 | 0.03 |
| Age (yrs) | 8.5 ± 5.8 | 7.7 ± 5.9 | 8.7 ± 5.8 | 8.1 ± 5.8 | 0.18 |
| Male gender | 550 (55%) | 50 (56.2%) | 388 (54.3%) | 112 (56.9%) | 0.79 |
| Renal diagnosis | 0.24 | ||||
| CAKUT | 424 (42.4%) | 44 (49.4%) | 291 (40.7%) | 89 (45.2%) | |
| Glomerulopathy | 388 (38.8%) | 30 (33.7%) | 292 (40.8%) | 66 (33.5%) | |
| Other | 189 (18.9%) | 15 (16.9%) | 132 (18.5%) | 42 (21.3%) | |
| Comorbidities | 355 (35.5%) | 38 (42.7%) | 250 (35.0%) | 67 (34.0%) | 0.32 |
| eGFR at PD start (ml/min/1.73 m2) | 8.0 (5.3) | 7.3 (5.1) | 7.9 (5.2) | 8.8 (5.6) | 0.01 |
| Urine output (L/m2/d) | 0.61 (0.94) | 0.53 (0.85) | 0.63 (0.93) | 0.56 (1.05) | 0.80 |
| PD modality | 0.51 | ||||
| CAPD | 222 (22.6%) | 23 (25.8%) | 156 (21.8%) | 43 (21.8%) | |
| APD | 759 (77.4%) | 60 (67.4%) | 547 (76.5%) | 152 (77.2%) | |
| Other | 13 (1.3%) | 6 (6.7%) | 6 (0.8%) | 1 (0.5%) | |
| Biocompatible PD fluid use | 428 (42.8%) | 33 (37%) | 316 (44.2%) | 79 (40.1%) | 0.31 |
| Height SDS | −1.9 ± 1.7 | −1.6 ± 2.1 | −1.8 ± 1.6 | −2.3 ± 1.8 | <0.001 |
| Nutritional supplementation | |||||
| None | 595 (59.4%) | 54 (60.7%) | 428 (59.9%) | 113 (57.4%) | 0.01 |
| Oral nutritional supplements | 218 (21.8%) | 24 (27%) | 160 (22.4%) | 34 (17.3%) | |
| NG tube | 92 (9.2%) | 6 (6.7%) | 69 (9.6%) | 17 (8.6%) | |
| Gastrostomy | 96 (9.6%) | 5 (5.6%) | 58 (8.1%) | 33 (16.7%) | |
| Amino acid PD fluid use | 12 (1.2%) | 4 (4.5%) | 5 (0.6%) | 3 (1.5%) | 0.01 |
| Growth hormone use | 64 (6.4%) | 3 (3.4%) | 50 (7.0%) | 11 (5.6%) | 0.37 |
| Hemoglobin (g/L) | 10.8 ± 1.9 | 11.0 ± 2.1 | 10.8 ± 1.9 | 10.8 ± 1.8 | 0.61 |
| Serum albumin (g/l) | 35.8 ± 6.9 | 36.2 ± 5.4 | 35.6 ± 7.2 | 36.2 ± 6.6 | 0.512 |
| Blood urea (mg/dl) | 96 (63) | 93 (64) | 97 (63) | 93 (62) | 0.52 |
| Serum bicarbonate (mM) | 23.9 ± 4.3 | 23.7 ± 4.1 | 23.9 ± 4.2 | 24.2 ± 4.7 | 0.63 |
| Serum phosphorus (mM) | 1.8 ± 0.6 | 1.8 ± 0.6 | 1.8 ± 0.6 | 1.7 ± 0.6 | 0.20 |
Data are expressed as n (%), median (IQR) or mean ± SD.