Coping strategies, emotional distress and perceived disease severity in a cohort of patients with rheumatoid arthritis: a mediation analysis.

Few data are available on the role of emotional distress as a possible mediator of the relationship between coping strategies and the Patient Global Assessment (PGA). This study aims to investigate, in a large cohort of patients affected by RA, the relationship between specific copying strategies and PGA, and the role of emotional distress as a mediator. A total of 490 patients with RA completed a set of standardized assessments including the self-reported PGA, the Coping Orientation to the Problems Experienced (COPE-NVI) and the Hospital Anxiety and Depression Scale (HADS). A mediation analysis was conducted to investigate the role of emotional distress. The effect of coping strategies on the PGA score was significantly mediated by the emotional distress for religious (total effect mediated 42.0%), planning (total effect mediated 17.5%), behavioural disengagement (total effect mediated 10.5%), and focus on and venting of emotions (total effect mediated 9.8%). Seven coping strategies (acceptance, positive reinterpretation and growth, active coping, denial, humour, substance use-mental disengagement) resulted directly associated to PGA total score, but no mediation effect was found. The remaining four coping strategies were not associated to the PGA score. This study suggests that coping strategies could be an important factor in the perceived disease severity. Consequently, in order to reduce PGA in patients with RA, a useful tool could be represented by the implementation of psychological interventions aiming to modify the specific coping styles. Moreover, to prevent or treat emotional distress seems to further reduce PGA.

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