Table 3.
Vitamin D intake from diet and the use of VitD supplements at 46 years and the differences by 25(OH)D cutoffs in nmol/L
| n | Mean ± SD | < 30 | 30–50 | 50–75 | > 75 | P | |
|---|---|---|---|---|---|---|---|
| Total nutritiona, µg/d | 3638 | 11.0 ± 5.8 | 8.9 ± 18.7 | 9.6 ± 5.1 | 11.4 ± 6.1 | 11.6 ± 5.8 | < 0.001 |
| Fortified dairy productsa, µg/d | 3555 | 6.0 ± 4.1 | 4.3 ± 3.9 | 5.0 ± 3.4 | 6.3 ± 4.4 | 6.6 ± 4.0 | < 0.001 |
| Fortified fat spreadsa, µg/d | 2766 | 4.3 ± 2.6 | 4.4 ± 2.7 | 4.2 ± 2.5 | 4.4 ± 2.8 | 4.1 ± 2.5 | 0.054 |
| Fisha, µg/d | 3384 | 2.0 ± 2.4 | 1.4 ± 2.0 | 1.8 ± 2.2 | 2.0 ± 2.4 | 2.2 ± 2.5 | 0.001 |
| Use of supplementsb, % (n) | 3650 | < 0.001 | |||||
| Regular | 18.5 (672) | 3.3 (3) | 9.5 (73) | 16.5 (288) | 29.4 (310) | ||
| Irregular | 7.3 (268) | 4.3 (4) | 5.3 (40) | 7.8 (135) | 8.5 (89) | ||
| No | 74.2 (2,708) | 92.4 (85) | 85.2 (652) | 75.7 (1,317) | 62.1 (654) | ||
| Supplementation dosea, µg/d, median (IQR) | 866 | 10.0 (12.5) | 4.4 (17.5) | 10.0 (10) | 10.0 (12.5) | 16.3 (20.0) | < 0.001 |
Values are displayed as mean (SD) or percentages with numbers in parentheses as % (n), unless otherwise indicated
aDifferences between the groups were tested using one-way analysis of variance for normally distributed and Kruskal–Wallis test for the non-parametric continuous variables
bDifferences between the groups were tested using Pearson’s Chi-squared test for categorical variables