Table 1.
Characteristics of the study population stratified according to low, normal and high bone turnover. Continuous variables are summarized as mean ± SD and categorical variables are summarized as counts (%). Vitamin D therapy reflects treatment with vitamin D analogues.
| Total | Low turnover | Normal turnover | High turnover | * p | |
|---|---|---|---|---|---|
| N | 84 | 19 | 15 | 50 | |
| Age (years) | 51.0 ± 13.7 | 55.8 ± 15.6 | 48.0 ± 11.7 | 50.1 ± 13.2 | 0.12 |
| Gender (%) | 0.63 | ||||
| Women | 37 (44.0) | 7 (36.8) | 8 (53.3) | 22 (44.0) | |
| Men | 47 (56.0) | 12 (63.2) | 7 (46.7) | 28 (56.0) | |
| Race (%) | 0.36 | ||||
| AA | 44 (52.4) | 8 (42.1) | 10 (66.7) | 26 (52.0) | |
| Caucasian | 40 (47.6) | 11 (57.9) | 5 (33.3) | 24 (48.0) | |
| Diabetes mellitus (%) | 0.38 | ||||
| yes | 30 (35.7) | 9 (47.4) | 6 (40.0) | 15 (30.0) | |
| no | 54 (64.3) | 10 (52.6) | 9 (60.0) | 35 (70.0) | |
| Vitamin D Therapy (%) | 0.52 | ||||
| yes | 45 (53.6) | 10 (52.6) | 10 (66.7) | 25 (50.0) | |
| no | 39 (46.4) | 9 (47.4) | 5 (33.3) | 25 (50.0) | |
| Duration of Dialysis (months) | 34.9 ± 29.5 | 30.5 ± 19.8 | 24.7 ± 16.5 | 40.3 ± 35.1 | 0.24 |
| PTH assay results | |||||
| Diasorin (pg/ml) | 376 ± 327 | 181 ± 246 | 362 ± 338 | 455 ± 324 | < 0.01 |
| Elecsys (pg/ml) | 734 ± 582 | 342 ± 423 | 608 ± 504 | 920 ± 579 | < 0.01 |
| Centaur (pg/ml) | 836 ± 657 | 409 ± 565 | 810 ± 660 | 1009 ± 622 | < 0.01 |
| Immulite (pg/ml) | 937 ± 675 | 554 ± 645 | 651 ± 434 | 1152 ± 658 | < 0.01 |
| Scantibodies (pg/ml) | 615 ± 517 | 335 ± 417 | 539 ± 562 | 755 ± 496 | < 0.01 |
| Alkaline phosphatase (U/l) | 181 ± 156 | 144 ± 116 | 139 ± 139 | 208 ± 171 | 0.01 |
*
From Kruskal-Wallis or χ2 analysis