Table 2.

Prevalence Ratios (95% CI) for Insulin Resistance According to Quartiles of Dietary Magnesium Intake per Kilogram Body Weight

	Magnesium Intake/kg (Quartiles)
	1 (Low)	2	3	4 (High)	P*
	1	0.690(0.604, 0.790)	0.553(0.481, 0.635)	0.435(0.376, 0.502)	<0.001
Model 1	1	0.651(0.567, 0.748)	0.496(0.426, 0.576)	0.347(0.290, 0.416)	<0.001
Model 2	1	0.646(0.563, 0.743)	0.493(0.424, 0.573)	0.347 (0.289, 0.415)	<0.001
Model 3	1	0.589(0.511, 0.678)	0.421(0.360, 0.493)	0.250(0.204, 0.306)	<0.001

Notes: Data are presented as coefficients (95% CI). Insulin resistance was defined by the upper quartile of HOMA-IR. *All models were constructed using the logistic regression analysis. Model 1: adjustment for total energy intake (kcal/day), age (years) and male (yes or no); model 2: model 1 with additional adjustment for ever smoking (yes or no), current alcohol consumption (yes or no), education level (high school degree or above, degree below high school), and residence (urban or not urban); model 3: model 2 with additional adjustment total energy intake (kcal/day), total protein intake (g/day), total carbohydrate intake (g/day), and total fat intake (g/day). Magnesium intake/kg: dietary magnesium intake per kilogram bodyweight; MetS: metabolic syndrome.