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BACKGROUND: Adults with multiple sclerosis (MS) frequently experience symptoms of depression and anxiety, which pose significant challenges. However, psychological support for these symptoms remains a major unmet healthcare need. OBJECTIVES: To inform the evidence base for the psychological management of adults with MS, this study examined the efficacy of cognitive behavioural therapy (CBT) interventions for improving symptoms of depression and anxiety. CBT interventions teach skills for improving the relationships between an individual's thoughts, feelings, and/or behaviours. The study also examined the role of intervention and study characteristics as moderators of treatment effects. METHODS: Medline, Embase, PsycINFO, and Cochrane Central Register of Controlled Trials were searched up to August 2024 for randomised control trials. RESULTS: A meta-analysis of 15 clinical trials (1508 participants) was conducted, which found a medium significant treatment effect size for depression symptoms (g = 0.59, 95 % Confidence Interval CI 0.38, 0.80) and a small significant treatment effect size for anxiety symptoms (g = 0.38 95 % CI 0.19, 0.57). Moderator analyses revealed treatment effects for anxiety, but not depression, were significantly larger for studies conducted in non-Western countries compared to Western countries, and for those with smaller sample sizes. CONCLUSIONS: CBT-based interventions appear efficacious for the management of depression and anxiety symptoms in adults with MS. However, future clinical trials with larger samples and more rigorous methodology are warranted. Further examination of intervention characteristics, including ways in which CBT is tailored and how this relates to outcomes, may help to refine interventions for people with MS.
Lucien et al. (Tue,) studied this question.