TABLE 3.

Computational formula (homocysteine score = ∑ weight_I × lifestyle factor_I) for homocysteine score¹

Lifestyle factor	Weight (per category or 1 SD)2	Partial R2
Smoking		0.004
Never	0
Past	−0.020
Current	0.044
Multivitamin use		0.02
No	0
Yes	−0.046
Caffeine intake,3 mg/d	0.017	0.007
Alcohol intake, g/d	0.023	0.007
Dietary folate intake,3 μg/d	−0.018	0.007
Supplementary folate intake,3 μg/d	−0.031	0.01

¹Weight is the β coefficient for each determinant from the multivariable model which included lifestyle factors that were significantly associated with plasma homocysteine concentration in the multivariable result in Table 2.

²One increment is the SD; SD is 211mg/d for caffeine intake, 12 g/d for alcohol intake, 120 μg/d for dietary folate intake, and 221 μg/d for supplementary folate intake.

³Nutrient values are energy-adjusted intake.