PTH and diabetes mellitus: At univariate analysis serum hemoglobin was significantly (p = 0.001) associated with: age (r = −0.21), gender (r = −0.20), diabetes (r = −0.27), PTH (r = −0.42), serum calcium (r = −0.47), serum phosphorus (r = 0.60), GFR (r = 0.32), transferrin saturation (r = 0.19), CRP (r = −0.34), homocysteine (r = −0.26), serum albumin (r = 0.49), and serum cholesterol (r = 0.24); serum hemoglobin was not associated with ferritin (r = 0.10; p = 0.08) or BMI (r = 0.04; p = 0.30).