Table 3.
Functional outcomes
| Outcome (possible change) | Median change | Significance | |
|---|---|---|---|
| Cohort 1 | Cohort 2 | (2-sided p) | |
| Pain severity (/9) | -4.0 | -4.0 | 0.864 |
| Symptom frequency scale (Deyo 1988) | |||
| Back pain bothersomeness | -1.0 | -1.5 | 0.625 |
| Interference with work | -2.0 | -1.5 | 0.675 |
| Life impact (/4) | -1.0 | -1.0 | 0.364 |
| Cut down activity (/28 | -2.0 | -5.0 | 0.252 |
| Cut down work (/28) | -1.0 | -1.0 | 0.607 |
| SF-12 subscales | |||
| General health (/4) | 0.0 | 0.0 | 0.180 |
| Interference with normal work (/4) | -1.0 | -1.0 | 0.298 |
| Feeling calm (/4) | 0.0 | 0.0 | 0.891 |
| Having energy (/4) | 0.0 | -1.0 | 0.190 |
| Feeling downhearted (/4) | 0.0 | -1.0 | 0.151 |