Are the changes in observed functioning after multi-disciplinary rehabilitation of patients with fibromyalgia associated with changes in pain self-efficacy?

作者：Rasmussen Marianne Uggen^*; Amris Kirstine; Rydahl Hansen Susan; Danneskiold Samsoe Bente; Mortensen Erik Lykke; Christensen Robin; Sjolund Bengt H

来源：Disability and Rehabilitation, 2017, 39(17): 1744-1752.

DOI：10.1080/09638288.2016.1211179

• Fibromyalgia
• pain self-efficacy
• multi-disciplinary rehabilitation
• observed activity performance
• self-reported perceived capacity

Objective: To examine the hypothesis that change in pain self-efficacy is associated with observed and self-reported activity, pain intensity, catastrophizing, and quality of life after multi-disciplinary rehabilitation of fibromyalgia patients.Design: In-depth analyses of secondary outcomes of a randomized-controlled trial.Subjects: Women (N=187) with fibromyalgia.Methods: Outcomes were Pain Self-Efficacy, Assessment of Motor and Process Skills (AMPS), SF-36 Physical SF-36-PF), pain intensity, and SF-36 Mental Composite Score (SF-36-MCS) to assess quality of life and pain catastrophizing. Individual and group associations between outcomes were examined.Results: Individual changes in pain self-efficacy were not associated with changes in observed activity: AMPS motor (r(s)=0.08, p=0.27) and process (r(s)=0.12, p=0.11), not even in those patients with a clinically relevant improvement in observed functioning (38.5%), and only weakly or moderatly with changes in SF-36-PF; (r(s)=0.31, p<0.0001), SF-36-MSC; (r(s)=0.41, p<0.0001), and pain catastrophizing (r(s)=-0.31, p<0.0001). No differences in pain self-efficacy were observed between the rehabilitated group and controls (difference: 1.61; 95%CI: -0.84 to 4.06; p=0.24). However, a subgroup (34%) had a clinically relevant improvement in pain self-efficacy. This group was younger (mean age 41.4 vs. 45.8, p=0.01), more recently diagnosed (1.8 vs. 2.8 years, p=0.003), but had an unresolved welfare situation (59% vs. 40%, p=0.02).Conclusion: The main hypothesis was falsified, as there was no association between pain self-efficacy and actual performance of activity. The relation to functioning may be limited to perceived, cognitive-emotional aspects, as indicated by the weak to moderate correlations to the self-reported measures.Implications for RehabilitationImprovement in observed activity post multi-disciplinary rehabilitation was not associated with change in pain self-efficacy.Patients performed better after rehabilitation, but did not perceive to have improved their capacity.The relationship between pain self-efficacy and functioning may be limited to cognitive-emotional aspects rather than actual activity.Both observational and self-reported measures should be included in evaluating outcomes of rehabilitation for patients with fibromyalgia.

• 出版日期2017