Table 1.
Clinical characteristics of living kidney donors at the time of donation in the entire cohort and in groups according to the tertiles of protein intake per ideal body weight.
| All (n = 43) | Low PI/IBW (≤0.88 g/kg/day) (n = 14) |
Intermediate PI/IBW (0.89–1.13 g/kg/day) (n = 14) |
High PI/IBW (>1.13 g/kg/day) (n = 15) |
p for Trend | |
|---|---|---|---|---|---|
| Age, years | 56.4 ± 10.2 | 51.6 ± 11.2 | 61.1 ± 8.4 | 56.3 ± 9.1 | 0.27 |
| Male, n (%) | 15 (35) | 5 (36) | 4 (29) | 6 (40) | 0.80 |
| MAP (mmHg) | 85.7 ± 9.5 | 85.8 ± 12.7 | 86.5 ± 6.5 | 85.0 ± 8.9 | 0.65 |
| Hypertension, n (%) | 7 (16) | 3 (21) | 2 (14) | 2 (13) | 0.56 |
| Height (m) | 1.61 ± 0.08 | 1.62 ± 0.10 | 1.59 ± 0.08 | 1.62 ± 0.08 | 0.79 |
| BMI (kg/m2) | 23.3 ± 3.0 | 23.8 ± 3.6 | 22.8 ± 2.5 | 23.2 ± 3.0 | 0.71 |
| BSA (m2) | 1.63 ± 0.16 | 1.66 ± 0.17 | 1.58 ± 0.15 | 1.65 ± 0.17 | 0.71 |
| UN (mg/dL) | 13.5 ± 3.0 | 12.3 ± 3.4 | 13.9 ± 3.1 | 14.3 ± 2.3 | 0.12 |
| Cr (mg/dL) | 0.70 ± 0.11 | 0.68 ± 0.10 | 0.70 ± 0.12 | 0.72 ± 0.13 | 0.56 |
| eGFR (mL/min/1.73 m2) | 76.9 ± 12.9 | 81.4 ± 13.0 | 73.6 ± 13.6 | 75.8 ± 11.6 | 0.21 |
| ERPF (mL/min) | 224 ± 62 | 209 ± 46 | 210 ± 48 | 250 ± 79 | 0.11 |
| TP (g/dL) | 7.1 ± 0.4 | 7.1 ± 0.4 | 7.1 ± 0.4 | 7.1 ± 0.4 | 0.36 |
| Alb (g/dL) | 4.2 ± 0.3 | 4.1 ± 0.3 | 4.3 ± 0.4 | 4.3 ± 0.2 | 0.13 |
| UA (mg/dL) | 4.9 ± 1.2 | 5.0 ± 1.1 | 4.3 ± 1.5 | 5.3 ± 0.9 | 0.26 |
| Pi (mg/dL) | 3.6 ± 0.4 | 3.7 ± 0.4 | 3.6 ± 0.4 | 3.6 ± 0.4 | 0.64 |
| SI (g/day) | 8.0 ± 2.9 | 6.7 ± 2.8 | 7.2 ± 2.1 | 10.0 ± 2.8 | 0.003 |
Data are presented as means ± standard deviation or numbers with percentages in parentheses. Abbreviations: Alb, albumin; BMI, body mass index; BSA, body surface area; Cr, serum creatinine; eGFR, estimated-glomerular filtration rate; ERPF, effective renal plasma flow; MAP, mean arterial pressure; Pi, inorganic phosphate; PI/IBW, estimated protein intake/ideal body weight; SI, sodium intake; TP, total protein; UA, uric acid; UN, urea nitrogen.