Exploration of the Effects of Protective Person–Environment Factors Between Functional Impairments and Stress in Individuals With Multiple Sclerosis: Mediation and Moderation Analyses
Beatrice Lee, Timothy N. Tansey, Fong Chan, Malachy Bishop, William T. Hoyt, Laura M. Hancock
Abstract
Functional impairments can lead to stress in individuals with multiple sclerosis (MS). The study examined protective person and environment factors (i.e., positive cognitive stress appraisal, core self-evaluations [CSE], resilience, hope, spirituality, social support, and environmental supports) as both mediators and moderators of this association to guide understanding of the experience of stress in this population. The sample consisted of 373 participants with MS. In simple mediation analyses, positive cognitive stress appraisal, CSE, resilience, hope, social support, and environmental supports served as a partial mediator between functional impairments and stress. In a parallel mediation analysis, significant unique indirect effects were observed for two of the seven hypothesized mediator variables (CSE and environmental supports). Separate moderator tests provided support for the CSE variable as a protective factor. The positive association between functional impairments and stress was weaker for persons reporting high CSE compared with those reporting low CSE. The findings provide implications for rehabilitation counseling practices by promoting CSE and environmental supports in improving rehabilitation and psychosocial outcomes for individuals with MS.