Table 2.

Associations and SEs of 50-mg/day Increments in Energy-Adjusted Self-Reported Total (Dietary and Supplemental) Magnesium Intake with CAC and AAC

Model*	n	β †	SE	p Value
CAC as ln(AS + 1)
Model 1	2,695	–0.18	0.06	0.001
Model 2		–0.13	0.05	0.011
Model 3		–0.25	0.07	<0.001
AAC as ln(AS + 1)
Model 1	2,681	–0.19	0.06	0.001
Model 2		–0.09	0.06	0.09
Model 3		–0.13	0.08	0.07

^*Tobit regression analyses were adjusted as follows: model 1 adjusted for calcium and energy intake, age, sex, and exam cycle. Model 2 adjusted as for model 1, plus BMI, smoking status, SBP, fasting insulin, total-to-high-density lipoprotein cholesterol ratio, use of hormone replacement therapy (women only), menopausal status (women only), treatment for hyperlipidemia, hypertension or cardiovascular disease prevention, or diabetes, and alcohol intake. Model 3 adjusted as for model 2, plus intake of vitamins K and D, saturated fat, and fiber.

^†β Coefficients of Tobit regression can be interpreted as most linear regression coefficients on the natural log scale, that is, as percent changes per 50-mg/day increments in magnesium intake, obtained by exponentiating the coefficient and subtracting 1. For example, in model 3 of the CAC regression, the –0.25 β coefficient can be thought of as [e^–0.25 – 1] = –22%, or 22% lower CAC per 50-mg/day increment in intake.

Abbreviations as in Table 1.