Table 1 Demographics and preoperative data in patients with CSM

Age (yrs)

61.3 ± 5.6

61.0 ± 7.1

0.74

Sex (Male: Female)

35: 15

41: 31

0.14

Duration of symptoms (mos)

38.4 ± 20.7

34.2 ± 23.6

0.31

FU (yrs)

9.8 ± 2.8

9.1 ± 2.6

0.23

Lordotic angle (°)

8.0 ± 9.9

9.5 ± 15.0

0.54

Minimum AP diameter of cervical canal (mm)

12.0 ± 0.7

14.8 ± 1.1

<0.01

1 level

15

30

0.40

2 levels

22

28

3 levels

13

14