Table 1 Patients' characteristics
Groups Categories | Total† No. (%) | Mean ± SD‡(range) |
|---|---|---|
Age | 101 | 75.3 ± 4.1 (70-86) |
Under 76 | 57 (56.4) | |
76 and above | 44 (43.6) | |
Sex | 101 | |
Male | 51 (50.5) | |
Female | 50 (49.5) | |
Duration of back pain * (weeks) | 100 | 100 ± 295 (0-2020) |
Duration of leg pain * (weeks) | 100 | 92 ± 132 (0 - 624) |
ASA score | 101 | |
1 | 7 (6.9) | |
2 | 65 (64.4) | |
3 | 28 (27.7) | |
4 | 1 (1.0) | |
Smoking | 100 | |
Yes | 14 (14.0) | |
No | 86 (86.0) | |
Body mass index | 96 | 26.8 ± 3.1 (18.8-33.7) |
< 20 | 1 (1.0) | |
20-24.9 | 29 (30.2) | |
25-29.9 | 50 (52.1) | |
30 + | 16 (16.7) | |
Hospital stay (days)* | 101 | 6 ± 3 (2-15) |
Levels of laminectomy | 100 | |
1 level | 48 (48.0) | |
> 1 level | 52 (52.0) | |
Marital status | 101 | |
Cohabiting | 61 (60.4) | |
Live alone | 40 (39.6) | |
Educational level § | 99 | |
Lower | 88 (88.9) | |
Higher | 11 (11.1) | |
Indication for surgery | 101 | |
Central spinal stenosis | 79 (78.2) | |
Lateral spinal stenosis | 6 (5.9) | |
Combination of above | 16 (15.8) | |
Previous back surgery | 101 | |
Yes | 22 (21.8) | |
No | 79 (78.2) |