Mean values (SD) for Whiplash Beliefs Questionnaire scores before and after reading the draft booklet, for the three groups of subjects, together with 95% confidence intervals for the shifts in score (lower scores represent more positive beliefs: a score of 9 represents complete belief in statements, while 45 represents complete disbelief)
| Before | After | Shift | 95% CI | |
|---|---|---|---|---|
| Statistical significance of differences between mean scores tested by two sided paired t test: p<0.001, except for the shift experienced by the manipulation patients where p<0.05. | ||||
| Workers (n = 75) | 24.2 (6.4) | 14.9 (5.6) | 9.4 (6.6) | 7.9 to 10.9 |
| A&E patients (n = 24) | 21.1 (5.8) | 14.7 (4.4) | 6.5 (6.1) | 3.9 to 9.1 |
| Manipulation patients (n = 12) | 24.8 (6.0) | 21.5 (7.8) | 3.3 (4.4) | 0.5 to 6.1 |
| Overall (n = 111) | 23.6 (6.3) | 15.5 (6.0) | 8.1 (6.6) | 6.9 to 9.3 |