Table 3. Regression Models of Magnesium Intake on Insulin Resistance.
| Unadjusted | Adjusted | Adjusted+%BF | Adjusted+BMI | |||||||||
| β | β* | p | β | β* | p | β | β* | p | β | β* | p | |
| HOMA-IR | ||||||||||||
| Entire Cohort | −21.03 (1.8) | −0.232 (0.02) | <0.0001 | −33.75 (2.9) | −0.374 (0.03) | <0.0001 | −19.33 (2.9) | −0.214 (0.03) | <0.0001 | −11.65 (2.9) | −0.129 (0.03) | <0.0001 |
| Normal–weight | −7.68(2.6) | −0.085 (0.03) | 0.003 | −10.92 (4.0) | −0.120 (0.05) | <0.0001 | – | – | – | – | – | – |
| Overweight | −12.84 (3.9) | −0.141 (0.04) | 0.001 | −30.13 (6.9) | −0.332 (0.08) | <0.0001 | – | – | – | – | – | – |
| Obese | −23.79 (4.0) | −0.262 (0.04) | <0.0001 | −45.97 (6.5) | −0.506 (0.07) | <0.0001 | – | – | – | – | – | – |
| Pre-Menopause | −15.07 (2.5) | −0.188 (0.03) | <0.0001 | −35.32 (4.4) | −0.439 (0.05) | <0.0001 | −20.4(4.6) | −0.254 (0.05) | <0.001 | −13.57 (4.4) | −0.169 (0.05) | 0.002 |
| Post-Menopause | −18.91 (3.5) | −0.208 (0.04) | <0.0001 | −27.44 (4.6) | −0.311 (0.05) | <0.0001 | −16.89 (4.8) | −0.191 (0.05) | <0.001 | −7.32(4.6) | −0.083 (0.05) | NS |
1
Regression model adjusted for caloric intake, physical activity, medication use and menopausal status.
2
β = Unstandardized Beta (standard error), β* = Standardized Beta (standard error), Magnesium intake (g/day/kg).
3
Normal-weight, overweight and obese groups are based upon %BF according to the Bray criteria (25).
4
Magnesium intake (Pre-Menopause 360.63±209.8 mg/day, Post-Menopause 353.82±192.9 mg/day) (Entire cohort, Normal-weight, Overweight, & Obese – See Table.1).
5
Statistical significance was set to p<0.05 (IBM SPSS Statistics 19).