Table 2.
The results of the four questionnaires at the follow-ups (3 weeks, 3, 6 and 12 months)
| 3 weeks | 3 months | 6 months | 12 months | |||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD (P) | Mean | SD (P) | Mean | SD (P) | |
| von Korff pain intensity score | 70.9 | 19.3 | 61.5 | 21.4 (0.000) | 60.7 | 21.6 (0.000) | 60.5 | 23.0 (0.000) |
| von Korff disability score | 68.9 | 23.6 | 56.4 | 25.5 (0.000) | 51.0 | 27.5 (0.000) | 53.9 | 27.8 (0.000) |
| Hannover ADL score | 37.7 | 22.1 | 48.0 | 25.0 (0.000) | 45.8 | 26.3 (0.000) | 47.6 | 26.4 (0.000) |
| EQ-5D | 0.37 | 0.37 | 0.52 | 0.35 (0.000) | 0.54 | 0.36 (0.000) | 0.52 | 0.38 (0.000) |
P values are given for differences between 3, 6 and 12 months and baseline (3 weeks)