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Variables
|
Premenopausal group
|
Early postmenopausal group
|
Late postmenopausal group
|
P value
|
|---|
|
No. of patients (n)
|
38
|
28
|
25
| |
|
Age (years)
|
43.82 (5.32)
|
54.89 (4.20)
|
66.76 (4.27)
|
< 0.001
|
|
Intraoperative time (min)
|
120.00 (120.00–180.00)
|
120.00 (120.00–120.00)
|
120.00 (120.00–180.00)
|
0.399
|
|
Blood loss (ml)
|
50.00 (30.00–50.00)
|
50.00 (32.50–75.00)
|
50.00 (30.00–55.00)
|
0.595
|
|
Follow-up period (month)
|
15.50 (12.00–24.75)
|
12.00 (12.00–18.00)
|
12.00 (12.00–24.00)
|
0.312
|
|
BMI (kg/m2)
|
22.40 (20.83–24.56)
|
23.66 (20.55–25.76)
|
23.83 (22.27–27.12)
|
0.165
|
|
BMD T value
|
0.81 (1.16)
|
− 1.40 (0.98)
|
− 1.61 (1.09)
|
< 0.001
|
|
Surgery type
|
0.713
|
|
1 level
|
22
|
16
|
12
| |
|
2 level
|
16
|
12
|
13
|
|
Serum calcium (mmol/l)
|
2.26 (2.21–2.32)
|
2.31 (2.24–2.39)
|
2.30 (2.25–2.38)
|
0.027
|
|
Serum phosphate (mmol/l)
|
1.12 (1.05–1.21)
|
1.18 (1.07–1.33)
|
1.08 (1.04–1.19)
|
0.141
|
|
Serum magnesium (mmol/l)
|
0.87 (0.85–0.90)
|
0.88 (0.83–0.93)
|
0.89 (0.87–0.92)
|
0.162
|
- Noncontinuous variables are presented as the number of patients, and continuous variables are presented as the mean (SD) for normally distributed data or as the median (interquartile range) for nonnormally distributed data
