Table 2.
Mutually-adjusted relationships between circulating 25(OH)D (z-score) and vitamin D dietary intake and supplement use, after adjustment for season of measurement and other confounders.
| Men |
Women |
|||||||
|---|---|---|---|---|---|---|---|---|
| N | Regression coefficient | 95% CI | p-value | N | Regression coefficient | 95% CI | p-value | |
| Adjusted for season only | 397 | 423 | ||||||
| Vit D intake from food only (μg/day) | 0.066 | (0.021, 0.111) | 0.004 | 0.081 | (0.028, 0.135) | 0.003 | ||
| Taking a vit D supplement/medication | 0.185 | (-0.003, 0.374) | 0.054 | 0.161 | (0.001, 0.322) | 0.049 | ||
| Adjusted for season and other confoundersa | 377 | 419 | ||||||
| Vit D intake from food only (μg/day) | 0.067 | (0.018, 0.116) | 0.007 | 0.077 | (0.021, 0.133) | 0.008 | ||
| Taking a vit D supplement/medication | 0.166 | (-0.031, 0.362) | 0.098 | 0.119 | (-0.047, 0.285) | 0.158 | ||
a
Adjusted for season of blood collection, age, BMI, social class, smoker status, alcohol consumption, activity score, dietary calcium intake, and years since menopause and HRT use in women.