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Effect of vitamin D supplementation on plasma calcidiol* levels at six months. Values are numbers (percentages) unless stated otherwise
| Variables | Vitamin D group (n=216) | Placebo group (n=237) | P value |
|---|---|---|---|
| Mean (SD) calcidiol level (nmol/L) | 55.0 (22.5) | 36.0 (25.5) | <0.001 |
| Type of deficiency: | |||
| Severe (<25 nmol/L) | 18 (8) | 92 (39) | <0.001 |
| Mild (10-20 nmol/L) | 76 (35) | 82 (35) | |
| Adequate (>50 nmol/L) | 122 (57) | 63 (27) |
*25-hydroxyvitamin D.
