Comparison of Metacognitive Therapy Versus Cognitive Behavioral Therapy for Generalized Anxiety Disorder: A Meta-Analysis of Randomized Control Trials

The aim of this meta-analysis is to compare the efficacy of meta-cognitive therapy (MCT) and cognitive behavioral therapy (CBT) in patients with generalized anxiety disorder (GAD). This study is reported according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). A systematic electronic literature search was conducted on April 20, 2023, to find studies reporting on the efficacy of MCT for GAD. The search keywords included "Generalized anxiety disorders," "meta-cognitive therapy," "cognitive behavior therapy," and "randomized control trials.: The following databases were searched to find relevant articles: PubMed, PsychInfo, CINAHL, and SCOPUS. Outcomes assessed in the present meta-analysis included the change in the Penn State Worry Questionnaire (PSWQ) from baseline to completion of treatment and after two years of follow-up. The PSWQ measures the trait of worry in adults. Worry is regarded as a dominant feature of GAD. Secondary outcomes assessed in this meta analysis included symptom severity using the Beck anxiety inventory (BAI). Change in BAI was scored from baseline to completion of treatment and after two years of follow-up. A total of three studies were included in this meta-analysis. The results show that patients treated with MCT had greater reductions in PSWQ and BAI scores post-treatment and after two years of treatment, as well as higher rates of recovery compared to those treated with CBT. These findings suggest that MCT is a promising approach for treating GAD and may have advantages over traditional CBT approaches.