Parameters | PLF group (n = 77) | CF group (n = 76) | P |
---|---|---|---|
Male–female ratio | 33 / 44 | 36 / 40 | NS |
Patient age: years (range) | 63.0 ± 8.4 (49–79) | 60.6 ± 7.4 (46–76) | NS |
Surgery region: unilateral–bilateral ratio | NS | ||
Unilateral | 43 | 51 | |
Bilateral | 34 | 25 | |
Surgical level | NS | ||
No. of patients who underwent one level | 46 | 42 | |
No. of patients who underwent two level | 27 | 33 | |
No. of patients who underwent three level | 4 | 1 | |
Stenosis degree | NS | ||
Grade A | 0 | 0 | |
Grade B | 34 | 30 | |
Grade C | 35 | 37 | |
Grade D | 8 | 9 | |
Lateral recess stenosis degree (n) | NS | ||
Grade 0 | 0 | 0 | |
Grade 1 | 0 | 0 | |
Grade 2 | 38 | 35 | |
Grade 3 | 39 | 41 | |
Medical illness | NS | ||
No. of patients with diabetes | 9 | 6 | |
No. of patients with cardiovascular | 16 | 12 | |
No. of patients with others | 6 | 7 | |
No. of patients who smoke | 12 | 15 | NS |