Average effect of treatment on pain, disability and tenderness visual analogue scale scores
| Treatment effect (sham–active) | p Values | ||||
| Effect | 95% CI | Treatment | Time | Treatment×time | |
| Pain | 1.9 | 0.6 to 3.2 | 0.007 | 0.4 | 0.5 |
| Disability | 1.1 | −0.2 to 2.4 | 0.10 | 0.3 | 0.5 |
| Tenderness | 1.4 | 0.2 to 2.5 | 0.02 | 0.4 | 0.9 |
p Values are from repeated-measures analysis of variance during follow-up (weeks 3, 7 and 13), using the average of the screening and baseline assessments as a covariate. p Values <0.05 are highlighted in bold.