| |
Revision surgery
|
χ2
|
P
|
|---|
|
No (n = 62)
|
Yes (n = 6)
|
|---|
|
Gender
| | | | |
|
Female
|
21 (33.9%)
|
4 (66.7%)
| | |
|
Male
|
41 (66.1%)
|
2 (33.3%)
|
Fisher
|
0.183
|
|
Age
| | | | |
|
Mean ± SD
|
48.98 ± 8.55
|
43.67 ± 9.87
|
t (1.437)
|
0.155
|
|
BMI
| | | | |
|
Mean ± SD
|
27.36 ± 2.54
|
25.67 ± 2.84
|
t (1.546)
|
0.127
|
|
Co morbidity
| | | | |
|
NAD
|
26 (41.9%)
|
2 (33.3%)
| | |
|
Smoker
|
19 (30.7%)
|
0 (0%)
| | |
|
Diabetes
|
17 (27.4%)
|
4 (66.7%)
|
4.666
|
0.097
|
|
ASA:
| | | | |
|
Mean ± SD
|
2.39 ± 0.51
|
2.67 ± 1.03
|
t (−0.648)
|
0.544
|
|
Previous surgery
| | | | |
|
No
|
42 (67.7%)
|
6 (100%)
| | |
|
Yes
|
20 (32.3%)
|
0 (0%)
|
Fisher
|
0.169
|
|
No of operated levels
| | | | |
|
Mean ± SD
|
2.23 ± 1.03
|
1.33 ± 0.52
|
t (3.592)
|
0.005*
|
|
Extent of dural tear
| | | | |
|
0–2 cm
|
36 (58.1%)
|
6 (100%)
| | |
|
> 2 cm
|
26 (41.9%)
|
0 (0%)
|
Fisher
|
0.075
|
|
Post-op immobilization
| | | | |
|
Mean ± SD
|
1.51 ± 0.47
|
1.33 ± 0.26
|
0.901
|
0.371
|
|
Clinical outcome
| | | | |
|
Better
|
62 (100%)
|
0 (0%)
| | |
|
Worse
|
0 (0%)
|
6 (100%)
|
Fisher
|
< 0.001*
|
|
Length of hospital stay (days)
| | | | |
|
Mean ± SD
|
6.53 ± 1.28
|
31.67 ± 1.03
|
−46.66
|
< 0.001**
|
|
Days of drains
| | | | |
|
Mean ± SD
|
4.32 ± 0.65
|
6.33 ± 1.03
|
−4.681
|
0.004*
|
|
Days of bed rest
| | | | |
|
Mean ± SD
|
4.48 ± 0.87
|
8.33 ± 1.16
|
−10.309
|
< 0.001**
|
|
Complications
| | | | |
|
No
|
56 (90.3%)
|
6 (100%)
| | |
|
CSF leakage
|
6 (9.7%)
|
0 (0%)
|
Fisher
|
> 0.999
|
- **P ≤ 0.001 is statistically highly significant
