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Table 1 Baseline characteristics
| Variable | N(%) = 604(100%) |
|---|---|
| Gender (male) | 417(69%) |
| Age (yrs) | 60.2(± 12.5) |
| BMI (kg/m 2 ) | 26.5(24.3-29.4) |
| Race (Caucasian) | 560(92.7) |
| Cause of CKD | |
| Diabetic nephropathy | 65(10.8%) |
| Renovascular | 188(31.1%) |
| Glomerular disease | 109(18%) |
| Interstitial disease | 57(9.4%) |
| Congenital (incl PKD) | 62(10.3%) |
| Unknown | 123(20.4%) |
| History of CVD | 178(29.5%) |
| Diabetes Mellitus | 144(23.8%) |
| Hypertension | 433(71.7%) |
| Smoking | 145(24%) |
| Systolic BP (mmHg) | 136(± 21) |
| Diastolic BP (mmHg) | 78(± 11) |
| Creatinine (μmol/l) | 184(± 71) |
| eGFR (MDRD, ml/min/1.73 m 2 ) | 36.8(± 13.9) |
| Total cholesterol (mmol/l) | 4.8(± 1.0) |
| Proteinuria (g/24 hours) | 0.3(0.1-0.9) |
| Phosphate (mmol/l) | 1.12(± 0.26) |
| Calcium (mmol/l) | 2.38(± 0.14) |
| PTH (pmol/l) | 8.3(5.6-14.4) |
| cFGF23 (RU/ml) | 116(67-203) |
| Medication | |
| Active vitamin D (any) | 135(22.4) |
| Phosphate binders (any) | 56(9.3) |
