1. Change in pain, depression, somatisation and functional status.
| Engel 1998 | ||
| Composite pain intensity | SF‐36 functioning‐emotional subscale | Health perception |
| ‐0.02, 95% CI ‐0.6 to 0.6 | ‐30.4, 95% CI ‐50.3 to ‐10.6 | 3.0, 95% CI 0.3 to 5.7 |
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