| Study | Intervention | Outcome | Int pre mean (SD) | Int post mean (SD) | C pre mean (SD) | C post mean (SD) | Post diff | Relative % change | SMD | P value |
| Rossignol 2000 | Organisational vs no‐intervention control | Pain (3 months) | 48.5 (20.4) | 14.4 (27.7) | 52.4 (20.7) | 10.9 (24.0) | 3.5 | 32.1 | 0.169 | NS |
| Pain (6 months) | 48.5 (20.4) | 22.9 (29.3) | 52.4 (20.7) | 12.8 (27.0) | 10.1 | 78.9 | 0.488 | NS |
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