Group design factors
| | | | |
Systematic literature review | Provided | 1.32 | 1.15 | | |
Not provided | 1.35 | 1.19 | 0.04 (−0.11 to 0.19) | F1,12 = 0.31 (p = 0.59) |
| | | | | |
Group composition | GPs only | 1.31 | 1.14 | | |
GPs and MHPs | 1.36 | 1.21 | 0.07 (−0.08 to 0.22) | F1,12 = 0.89 (p = 0.36) |
| | | | | |
Healthcare resource context | Assumption of “realistic” context | 1.31 | 1.14 | | |
Assumption of “idealistic” context | 1.37 | 1.20 | 0.06 (−0.09 to 0.20) | F1,12 = 0.24 (p = 0.63) |
| | | | |
Clinical and social cues
| | | | |
Depression | No co-existent depressive symptoms | 1.35 | 1.21 | | |
Co-existent depressive symptoms | 1.27 | 1.06 | −0.15 (−0.24 to −0.07) | |
| | | | | |
Organic cause | Patient willing to try any treatment | 1.33 | 1.18 | | |
Patient believes condition has an organic cause | 1.42 | 1.27 | 0.09 (0.01 to 0.18) | |
Financial motivation to return to work | No | 1.31 | 1.20 | | F7,105 = 7.26 (p<0.001) |
Yes | 1.36 | 1.12 | −0.08 (−0.19 to 0.03) | |
| | | | | |
Back pain induced insomnia | No | 1.30 | 1.11 | | |
Yes | 1.32 | 1.13 | 0.02 (−0.07 to 0.10) | |
| | | | | |
Condition | Chronic back pain | 1.31 | 1.13 | | |
Irritable bowel syndrome | 1.38 | 1.24 | 0.11 (0.01 to 0.21) | F2,30 = 3.90 (p = 0.03) |
Chronic fatigue syndrome | 1.34 | 1.16 | 0.03 (−0.05 to 0.12) | |
| | | | | |
Treatment | Behavioural therapy | 1.20 | 1.06 | | |
Cognitive behavioural therapy | 1.27 | 1.07 | 0.01 (−0.07 to 0.08) | F3,45 = 18.89 (p<0.001) |
Brief psychodynamic interpersonal therapy | 1.37 | 1.22 | 0.16 (0.09 to 0.23) | |
Antidepressants | 1.51 | 1.34 | 0.28 (0.21 to 0.34) | |