Fig. 1. Mean levels of serum magnesium with standard error bars stratified by race/ethnicity and diabetes status adjusting for age, gender and BMI. Fasting glucose: Normal (<6.10 mmol/L); Pre-Diabetes (6.10 mmol/L 6.99 mmol/L); Diabetes (7.00 mmol/L). * p < 0.05 (Normal as reference).