PTH and diabetes mellitus: A higher serum Mg level was associated with a lower AAC score (R2 = 0.06, unstandardized coefficient [B] = −7.81, p = 0.03), and remained after adjustment for age, serum phosphate, serum parathyroid hormone, low-density lipoprotein cholesterol, smoking history, and diabetes (model adjusted R2 = 0.36, serum Mg and AAC score B = −11.44, p = 0.00).