|
Age, mean ± SD, y
|
65.59 ± 7.74
|
57.30 ± 9.09
|
0.003
|
|
Sex, female/male, n
|
12/10
|
16/4
|
0.81
|
|
Operating time, mean ± SD, min
|
187.82 ± 37.49
|
191.65 ± 46.67
|
0.770
|
|
Blood loss, mean ± SD, cc
|
474.09 ± 331.31
|
387.25 ± 251.39
|
0.348
|
|
Hospital stay, mean ± SD, d
|
7.82 ± 2.40
|
8.10 ± 2.20
|
0.695
|
|
Level (n)
| | | |
|
L3-4
|
2
|
0
| |
|
L4-5
|
17
|
4
|
<0.001
|
|
L5-S1
|
3
|
16
| |
|
Vacuum type, n
| | | |
|
Static view
|
12
|
16
| |
|
Flexion view
|
0
|
8
|
<0.001
|
|
Extension view
|
22
|
20
| |
|
Comorbidity, n(%)
|
15(68.1)
|
8(40)
|
0.067
|
|
Perioperative complications, n(%)
|
3(13.6)
|
2(10)
|
0.716
|
|
Adjacent segment disease, n(%)
|
3(13.6)
|
1(5)
|
0.341
|
|
Revision surgery, n(%)
|
4(18.1)
|
2(10)
|
0.449
|
|
Fused segments, n(%)
|
25(56.8)
|
36(90)
|
0.019
|
