Table 3. Magnitude of factors related to serum 25OHD values derived by regression1.
| Factor (Unit) | Comparison/Group | value | P |
|---|---|---|---|
| Categorical Predictors (difference of LSE): | |||
| Ethnic background | SA vs. EU | -26.1 ± 2.5 | <0.001 |
| SA vs. EU: Fall | -27.9 ± 1.8 | 0.001 | |
| SA vs. EU: Spring | -24.3 ± 2.6 | <0.001 | |
| Takes supplement | SA: N vs. Y | -10.8 ± 1.3 | <0.001 |
| EU: N vs. Y | -10.7 ± 1.6 | <0.001 | |
| Sex | Female vs. Male | 5.0 ± 1.4 | <0.001 |
| Season | SA: Fall vs. Spring | -1.4 ± 1.1 | NS |
| EU: Fall vs. Spring | 2.3 ± 2.0 | NS | |
| Continuous Predictors (slope for factor by group): | |||
| BMI | 20–39 y age group | -0.65 ± 0.59 | |
| nmol/L·(kg/m2)-1 | 40–59 y age group | -1.05 ± 0.58 | |
| 60–79 y age group | -1.93 ± 0.36 | ||
| Skin Color | SA | 0.10 ± 0.19 | |
| nmol/L·ITA units-1 | EU | -0.41 ± 0.13 | |
| Fall | -0.27 ± 0.17 | ||
| Spring | -0.41 ± 0.13 | ||
1Values adjusted by a model that included the following factors: vitamin D intake from food, supplement consumption (Y/N), BMI, season, age group, sex, skin color, total serum cholesterol, and ethnic background.
SA (South Asian ancestry), EU (European ancestry).