| |
Tertiles of serum Mg (mmol/L)
|
|---|
|
1 (≤0.89)
|
2 (0.90-0.95)
|
3 (≥0.96)
|
|---|
|
Number
|
490
|
400
|
426
|
|
Median Mg level (mmol/L)
|
0.85
|
0.92
|
1.00
|
|
Sex (female, %)
|
48.6
|
50.3
|
55.2
|
|
Age (years)
|
63.6 ± 8.9
|
63.3 ± 8.4
|
61.6 ± 8.5
|
|
50–59 (%)
|
37.1
|
36.3
|
46.4
|
|
60–69 (%)
|
36.3
|
40.0
|
34.9
|
|
≥70 (%)
|
26.7
|
23.8
|
18.7
|
|
BMI (kg/m2)
|
24.1 ± 3.5
|
24.3 ± 3.9
|
24.3 ± 3.4
|
|
< 25 (%)
|
67.6
|
61.0
|
59.9
|
|
≥25 (%)
|
32.4
|
39.0
|
40.1
|
|
Knee injury (yes, %)
|
5.5
|
3.8
|
5.2
|
|
Serum PTH (μmol/L)
|
52.5 ± 38.0
|
54.8 ± 23.1
|
51.3 ± 20.2
|
|
Serum iron (μmol/L)
|
20.2 ± 8.6
|
19.8 ± 7.2
|
20.3 ± 7.8
|
|
Serum TIBC (μmol/L)
|
58.3 ± 11.3
|
59.1 ± 11.6
|
60.2 ± 11.4
|
|
Serum UIBC (μmol/L)
|
38.2 ± 13.5
|
39.5 ± 13.2
|
40.0 ± 13.1
|
|
Serum calcium (mmol/L)
|
2.3 ± 0.1
|
2.3 ± 0.1
|
2.3 ± 0.1
|
|
Serum 25(OH)D (μg/L)
|
25.8 ± 11.3
|
24.9 ± 9.9
|
25.9 ± 10.9
|
|
Serum zinc (μmol/L)
|
17.3 ± 3.5
|
18.5 ± 3.7
|
19.9 ± 6.1
|
|
Serum copper (μmol/L)
|
16.3 ± 3.2
|
16.4 ± 3.7
|
16.8 ± 3.5
|
|
Serum phosphorus (mmol/L)
|
1.2 ± 0.2
|
1.2 ± 0.2
|
1.2 ± 0.2
|
|
Education (educated, %)
|
70.2
|
66.5
|
67.8
|
|
Occupation (farmer, %)
|
85.5
|
87.3
|
85.7
|
-
Mg magnesium, BMI body mass index, PTH parathyroid hormone, TIBC, total iron binding capacity, UIBC unsaturated iron-binding capacity
