Systematic Review of Studies on Group Mindfulness–Based Interventions for Individuals Suffering from Schizophrenia Spectrum Disorders

Abstract Objectives The aim of this study was to determine whether group mindfulness-based interventions (MBIs) offer important support for pharmacological therapy for people suffering from schizophrenia spectrum disorders. Method Searches of electronic databases from 2008 to December 2022, checking of reference lists, and manual searches of journals were carried out. Randomized controlled trials (RCTs) in which structured group mindfulness-based interventions (MBIs) were conducted with adult people suffering from schizophrenia spectrum disorder were taken into account. The Jadad scale and Cochrane Handbook procedure were used for trial quality. Narrative analysis included 11 studies. Results The results showed that structured group MBIs have positive effects on the general symptoms of schizophrenia, negative and depressive symptoms, emotional regulation, well-being, and social and occupational functioning. Conclusions Structured group MBIs are safe and can be implemented in various treatment and rehabilitation structures for people suffering from schizophrenia spectrum disorder as part of a comprehensive recovery approach.