Table 1.
Patient demographics and renal history
| Characteristic | (N = 31) |
|---|---|
| Age (years) | |
| Mean ± SD | 52.9 ± 13.2 |
| Median (range) | 51 (27–80) |
| Gender, n (%) | |
| Male | 21 (68) |
| Female | 10 (32) |
| Ethnicity, n (%) | |
| Caucasian | 22 (71) |
| Black | 3 (10) |
| Asian | 6 (19) |
| Primary cause of end-stage renal disease, n (%) | |
| Othera | 18 (58) |
| Glomerulonephritis | 8 (26) |
| Diabetes | 4 (13) |
| Hypertension | 1 (3) |
| Time on dialysis (years) | |
| Mean ± SD | 7.2 ± 8.0 |
| Median (range) | 4.4 (0.2–30.3) |
| Pre-study phosphate binder, n (%) | |
| Sevelamer hydrochloride | 18 (58) |
| Sevelamer hydrochloride and calcium | 11 (36) |
| Other | 2 (7) |
| Using IV or oral vitamin D, n (%) | 25 (81) |
| Kidney transplant prior to study, n (%) | 8 (26) |
| Parathyroidectomy prior to study, n (%) | 4 (13) |
aOf the 18 patients with ‘other’ cited as the primary cause, the aetiology of CKD was recorded as unknown in five patients, IgA nephropathy in two patients, polycystic kidneys in two patients and interstitial nephritis, pyelonephritis, congenital, renovascular disease, reflux nephropathy, road traffic accident, hereditary nephritis, Goodpasture syndrome and Alport's syndrome in one patient each.