Table 5.
Clinical and Biochemical Characteristics in Patients With Low, Normal, or High Cortical Thickness
| Cortical thickness | ||||||
|---|---|---|---|---|---|---|
| Black | White | |||||
| Characteristics | Low (n =6) | Normal (n =52) | High (n =12) | Low (n =180) | Normal (n =160) | High (n =8) |
| Age (years) | 69 ±3 | 51 ±3 | 50 ±4a | 58 ±2 | 55 ±2 | 49 ±10a |
| Males (%) | 33.3 | 50.0 | 33.3 | 51.1 | 43.8 | 75.0 |
| Dialysis vintage (months) | 41 ±24.5 | 30 ±5.88 | 12 ±7.08 | 53 ±4.26 | 55 ±3.51 | 64 ±8.50 |
| Diabetics (%) | 33.3 | 42.3 | 16.7 | 23.3 | 17.5 | 17.2 |
| Vitamin D treatment (%) | 33.3 | 50.0 | 33.3 | 12.2 | 11.3 | 11.1 |
| Phosphate binders | ||||||
| Calcium-containing phosphate binders (%) | 50.0 | 27.3 | 25.0 | 80.2 | 74.0 | 75.0 |
| Noncalcium, nonaluminum phosphate binders (%) | 50.0 | 68.2 | 75.0 | 2.3 | 23.4 | 25.0 |
| No phosphate binder (%) | 0 | 4.5 | 0 | 17.4 | 2.6 | 0 |
| Serum calcium level (mg/mL) | 9.63 ±0.75 | 9.39 ±0.12 | 9.68 ±0.37 | 9.12 ±0.11 | 9.224 ±0.11 | 9.25 ±0.53 |
| Serum phosphorus level (mg/mL) | 5.27 ±0.75 | 5.46 ±0.24 | 8.12 ±1.32a | 4.96 ±0.15 | 5.00 ±0.15 | 4.52 ±0.91 |
| Serum alkaline phosphatase level (UI/L) | 177 ±65.9 | 262 ±75.9 | 327 ±145 | 147 ±19.8 | 116 ±9.36 | 89 ±24.3 |
| Plasma parathyroid hormone level (pg/mL) | 138 ±97.0 | 721 ±125a | 630 ±198a | 231 ±26.5 | 284 ±37.2 | 362 ±39.9a |
a
Significant different from low cortical thickness, p <.05, one-way ANOVA.