Changes in measurements between baseline and primary endpoint of the interviewees
| Questionnaire* | Improvement (number of patients) | Worsening (number of patients) | Missing data (number of patients) |
|---|---|---|---|
| VAS | 9 | 11 | 0 |
| NPDS | 13 | 6 | 1 |
| SF-36 | 11 | 8 | 1 |
| ADS | 5 | 8 | 7 |
*One participant had no change in the NPDS.
ADS, Common Depression Scale; NPDS, Neck Pain and Disability Scale; SF-36 (mcs=mental component score: mental component summary scale of the Short-Form-36-Questionnaire); VAS, visual analogue scale.