Table 1 Comparison of patient’s characteristics by treatment group: vitamin D treatment versus placebo
| Variable | Placebo group | Treatment group | P |
|---|---|---|---|
| Age (years) | 26.3 | 25.6 | 0.72 |
| Baseline 25(OH)D* level (ng/ml) | 32.9 | 30.9 | 0.56 |
| Baseline 1,25(OH)D† level (pg/ml) | 49.3 | 51.2 | 0.67 |
| Baseline parathyroid hormone (pg/ml) | 34.9 | 36.8 | 0.57 |
| Baseline calcium level (mg/dl) | 9.2 | 9.1 | 0.47 |
| Male gender (%) | 36.7% | 63.3% | 0.20 |