Table 1 Demographic and clinical characteristics of the patients.
All patients (n = 54) | Responder (n = 26) | Non-responder (n = 28) | P value | |
|---|---|---|---|---|
Age, year | 68.4 (9.4) | 70.3 (6.8) | 66.7 (11.1) | 0.298 |
Sex, M/F | 19/35 | 10/16 | 9/19 | 0.431 |
Diagnosis | 0.024 | |||
Spinal stenosis | 48 (88.9%) | 26 (100.0%) | 22 (78.6%) | |
HNP | 6 (11.1%) | 0 (0.0%) | 6 (21.4%) | |
Duration of pain, months | 0.857 | |||
< 3 | 6 (11.1%) | 3 (11.5%) | 3 (10.7%) | |
3–12 | 19 (35.2%) | 8 (30.8%) | 11 (39.3%) | |
> 12 | 29 (53.7%) | 15 (57.7%) | 14 (50.0%) | |
Lesion level | 0.879 | |||
L2–3 | 1 (1.9%) | 1 (3.8%) | 0 (0.0%) | |
L3–4 | 16 (29.6%) | 8 (30.8%) | 8 (28.6%) | |
L4–5 | 37 (68.5%) | 17 (65.4%) | 20 (71.4%) | |
Lesion severity | 0.586 | |||
Mild | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | |
Moderate | 27 (50.0%) | 12 (46.2%) | 15 (53.6%) | |
Severe | 27 (50.0%) | 14 (53.8%) | 13 (46.4%) |