ALB and diabetes mellitus: Only age was associated with s-Mg in DM patients [β-coefficient of −0.022 (95% CI; −0.038 to −0.005, P = 0.009)], and only s-Alb was associated with s-Mg in non-DM patients (β-coefficients of 0.305, 95% CI; 0.058 to 0.471, P = 0.013).