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Table. 1 Demographic and baseline data

From: Is there a difference in the outcomes of anterior cervical discectomy and fusion among female patients with different menopausal statuses?

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

  1. 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