Table 5.
Multiple regression analysis of serum α-tocopherol with each parameter.
| Explanatory Variable | Serum α-Tocopherol d | ||
|---|---|---|---|
| β | p | Adjusted R2 | |
| All subjects a | 0.093 | ||
| Smoking (nonsmoker, smoker) | −0.160 | 0.030 | |
| HOMA-R | −0.266 | 0.001 | |
| Age < 40 b | 0.135 | ||
| Frequency of alcohol consumption | 0.188 | 0.096 | |
| Age ≥ 40 c | 0.157 | ||
| Smoking (nonsmoker, smoker) | −0.286 | 0.008 | |
| HOMA-R | −0.236 | 0.035 | |
| Ferritin | −0.223 | 0.022 | |
Notes: HOMA-R, homeostasis model assessment ratio; All variables are log-transformed; a Adjusted for age, waist circumference, frequency of alcohol consumption, exercise, ferritin, dietary intakes of sodium, niacin, β-carotene, retinol, α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, vitamin C; b Adjusted for waist circumference, smoking (nonsmoker, smoker), exercise, insulin, dietary intakes of sodium, zinc, retinol, α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, vitamin C; c Adjusted for waist circumference, alcohol consumption, exercise, insulin, dietary intakes of retinol, α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, vitamin C; d Serum α-tocopherol was adjusted by triglycerides.