| Variable | Baseline | End of treatment | Follow-up | Significant difference between baseline and long-term follow up |
| Patient-specific function scale (n = 28) | 14 | 21 | 21 | p<0.001 |
| Scale 0–30 (30 is best) | 10.5–18.5 | 17.5–24.5 | 13–25 | |
| Days with low-back pain during the last 100 days (n = 27) | 100 | 35 | 20 | p<0.001 |
| Scale 0–100 (0 is best) | 25–100 | 7–35 | 10–84 | |
| low-back pain (n = 29) | 9 | 5 | 5 | p<0.001 |
| Scale 0–30 (0 is best) | 6–15 | 1.5–9.5 | 2.5–12 | |
| Roland Morris Questionnaire (n = 29) | 8 | 4 | 5 | p<0.001 |
| Scale 0–23 (0 is best) | 4.5–13.5 | 0.5–9 | 1–10 |
The median scores at baseline, at end of treatment, and at long-term follow-up a mean of 10.8 months after end of treatment are presented (median and 25th and 75th percentiles).