Table 1.
Patient characteristics.
| Non-Responder (n = 115) | Responder (n = 92) | p Value | |
|---|---|---|---|
| Age (years) | 64.1 ± 12.5 | 60.9 ± 13.1 | 0.077 |
| Sex (male/female) | 64/51 (55.6/44.3) | 48/44 (52.1/47.9) | 0.618 |
| Height (cm) | 161.3 ± 17.8 | 161.2 ± 19.3 | 0.943 |
| Weight (kg) | 65.3 ± 12.1 | 65.1 ± 9.3 | 0.887 |
| Body mass index (kg/m2) | 24.1 ± 4.3 | 24.2 ± 3.7 | 0.843 |
| Pain duration (months) | 12.0 (6.0–24.0) | 12.0 (8.5–24.0) | 0.468 |
| Foraminal stenosis grade, n (%) | 0.005 | ||
| Mild | 36 (31.3) | 49 (53.3) | |
| Moderate | 44 (38.3) | 27 (29.3) | |
| Severe | 35 (30.4) | 16 (24.6) | |
| Baseline pain intensity (NRS) | |||
| Back | 5.7 ± 2.3 | 6.1 ± 1.9 | 0.149 |
| Leg | 6.7 ± 1.8 | 6.5 ± 1.8 | 0.426 |
| Oswestry Disability Index | 31.8 ± 11.4 | 29.1 ± 9.9 | 0.081 |
| Medication quantification scale | 5.9 ± 5.9 | 7.0 ± 6.0 | 0.402 |
Data are expressed as mean ± standard deviation (SD), medians (interquartile range), or numbers (%). NRS = numeric rating scale.