Association between Serum Magnesium and Hemoglobin in Patients with Primary Hyperparathyroidism
Table 2
Comparison of the parameters between the nonanemia group and the anemia group by sex.
Males
Females
Nonanemia group (n = 53)
Anemia group (n = 49)
Nonanemia group (n = 116)
Anemia group (n = 89)
Age (years)
46.9 ± 15.5
49.8 ± 16.1
0.368
50.1 ± 14.1
57.3 ± 12.5
<0.001
Duration (years)
4.74 ± 8.68
4.69 ± 6.88
0.472
4.02 ± 5.68
5.21 ± 8.03
0.321
BMI (kg/m2)
22.8 ± 2.9
21.7 ± 3.1
0.111
23.5 ± 3.6
21.8 ± 3.4
0.002
Hemoglobin (g/L)
145 ± 11
107 ± 17
<0.001
132 ± 8
104 ± 13
<0.001
eGFR (mL/min/1.73 m2)
81.1 ± 39.7
58.4 ± 31.4
0.006
90.4 ± 37.3
69.9 ± 38.9
<0.001
Creatinine (umol/L)
88.8 ± 35.7
140.9 ± 108.3
0.003
62.7 ± 25.5
92.5 ± 89.0
0.001
Albumin (g/L)
39.6 ± 2.8
36.9 ± 4.5
0.002
40.1 ± 4.5
37.5 ± 11.0
0.039
Serum calcium (mmol/L)
2.82 ± 0.33
3.03 ± 0.48
0.011
2.81 ± 0.43
2.79 ± 0.45
0.783
Corrected calcium (mmol/L)
3.03 ± 0.55
3.35 ± 0.50
0.003
2.94 ± 0.49
3.17 ± 0.58
0.004
Serum phosphorus (mmol/L)
0.70 ± 0.19
0.76 ± 0.17
0.240
0.79 ± 0.25
0.81 ± 0.32
0.561
Serum magnesium (mmol/L)
0.89 ± 0.19
0.76 ± 0.17
0.001
0.90 ± 0.17
0.82 ± 0.17
0.001
PTH (pg/mL)
54.2 ± 60.0
114.7 ± 112.8
0.002
45.2 ± 60.4
72.8 ± 80.6
0.006
25(OH)D (ng/mL)
36.7 ± 20.4
32.5 ± 13.3
0.389
33.9 ± 19.2
32.8 ± 15.9
0.705
Hypomagnesemia n (%)
10(18.9)
23(47.0)
0.002
10(8.6)
34(38)
0.002
BMI, body mass index; eGFR, estimate glomerular filtration rate; PTH, parathyroid hormone; 25(OH)D, 25-hydroxyvitamin D. Hypomagnesemia was defined as serum magnesium <0.75 mmol/L.
