Table 4.
Clinical and demographic characteristics stratified by success at three months (n=64). Values are numbers (percentages) unless stated otherwise
| Characteristics | Not successful (n=36) | Successful (n=28) | P value |
|---|---|---|---|
| Mean (SD, range) age (years) | 55.9 (14.4, 22-79) | 54.6 (14.8, 21-85) | 0.74 |
| Female sex | 30 (83) | 25 (89) | 0.72 |
| Obesity | 11 (31) | 6 (21) | 0.57 |
| Mean (SD, range) duration of pain (years) | 2.7 (2.4, 0.1-9.0) | 5.4 (4.5, 0.3-16.0) | 0.40 |
| Opioid use | 12 (33) | 9 (32) | 0.92 |
| Mean (SD, range) Oswestry disability index (pre-procedure) | 42.8 (12.6, 14-67) | 36.6 (14.3, 14-60) | 0.46 |
| Mean (SD, range) baseline pain intensity at rest* | 4.8 (2.6, 1-10) | 4.7 (2.6, 1-10) | 0.26 |
| Mean (SD, range) baseline pain intensity with activity* | 7.5 (1.8, 3-10) | 7.5 (2.4, 2-10) | 0.46 |
*Numerical rating pain scale.