Table 1 Comparison of demographics and clinical characteristics between the 2 groups
Variables | Observation group (n = 20) | Control group (n = 20) | P value |
|---|---|---|---|
Age (years) | 81.10 ± 3.44 | 82.65 ± 5.12 | 0.269 |
Gender (n, %) | |||
 Male | 5 (20.00) | 5 (20.00) |  > 0.999 |
 Female | 15 (80.00) | 15 (80.00) | |
Disease duration (years) | 11.85 ± 5.08 | 13.80 ± 7.40 | 0.337 |
Radiculopathy (n, %) | |||
 Yes | 13 (65.00) | 11 (55.00) | 0.519 |
 No | 7 (35.00) | 9 (45.00) | |
Obesity (n, %) | |||
 Yes | 8 (40.00) | 6 (30.00) | 0.507 |
 No | 12 (60.00) | 14 (70.00) | |
Hypertension | |||
 Yes | 7 (35.00) | 9 (45.00) | 0.519 |
 No | 13 (65.00) | 11 (55.00) | |
Diabetes | |||
 Yes | 3 (15.00) | 6 (30.00) | 0.256 |
 No | 17 (85.00) | 14 (70.00) | |
Pre-operative VAS score | 6.05 ± 1.19 | 6.40 ± 1.47 | 0.412 |
Pre-operative ODI | 0.78 ± 0.07 | 0.74 ± 0.07 | 0.090 |