Table 3. Results of responder analyses.
These data were obtained after dichotomizing the within-person changes in outcomes from baseline to 4-weeks. The percentages listed in the table reflect the proportion of patients within each group that achieved at least a 30% or 50% reduction in clinical outcomes. These levels of outcome reductions are considered “moderate improvement” and “substantial improvement” respectively27,28.
| Outcome | Manual | Mechanical | Medical |
|---|---|---|---|
| Week 4; ≥ 30% reduction disability (OSW) |
76% | 50% | 48% |
| Week 4; ≥ 50% reduction disability (OSW) |
50% | 16% | 39% |
| Week 4; ≥ 30% reduction pain (NPR) |
94% | 69% | 56% |
| Week 4; ≥ 50% reduction pain (NPR) |
76% | 47% | 41% |
OSW: Oswestry Low Back Pain Disability Index; NPR: Numeric Pain Rating.