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Efficacy of mindfulness-based interventions on depressive symptoms among people with mental disorders: a meta-analysis.

Piyanee Klainin‐Yobas, Ma Aye Aye Cho, Debra Creedy

International Journal of Nursing Studies September 29, 2011 DOI: 10.1016/j.ijnurstu.2011.08.014 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Meta-analysis Randomized Peer reviewed
Population Adults with various mental disorders, including depression
Interventions Exposure-based cognitive therapy Mindfulness-based stress reduction programme Acceptance-based behaviour therapy Stress less with mindfulness
Topics Depression Meditation
Keywords Humans Mental disorders
Key findings Across 39 studies and 105 effect sizes, mindfulness-based interventions outperformed standard care in reducing depressive symptoms and preventing relapse, with effect sizes from 0.11 to 1.65. Exposure-based cognitive therapy showed the largest effect (d=2.09), followed by mindfulness-based stress reduction (d=1.92), acceptance-based behaviour therapy (d=1.33), and stress less with mindfulness (d=1.31). Effect sizes were linked to intervention session length but not to study methodological quality.

Abstract

Objectives: Depression, a common mental health problem, is projected to be the second leading cause of disability for adults by year 2020. Mindfulness-based interventions (MFIs) have been integrated into therapeutic work on depression, but limited systematic reviews reported their efficacy on heterogeneous groups of mental disorders. This meta-analysis aimed to examine the efficacy of the MFIs on depressive symptoms in people with various mental disorders.

Design: A meta-analysis of experimental and quasi-experimental studies was undertaken. Data sources: Multiple search strategies were undertaken to identify published and unpublished studies conducted between 1995 and 2011. Electronic databases used were Scopus, CINAHL, PubMed, ScienceDirect, PsyINFO, Dissertation Abstract International, Web of Science Index, Controlled-trial.com, and clinicaltrials.gov. Review

Methods: Data were extracted and appraised by two reviewers. For each study, the Quality Rating Index (QRI) and Code Sheet for Randomized Controlled Trials (CS-RCT) were used to assess methodological quality and extract relevant data respectively. Data were analysed and synthesized using PASW statistic 17.0 and Comprehensive Meta Analyses Software 2.0.

Results: Thirty-nine studies conducted in ten countries were included and 105 effect sizes were calculated. Most studies utilised single group pretest-posttest quasi-experimental design, convenience sampling, and self-reported questionnaires. Between-group comparisons indicated that MFIs are superior to standard care in reducing depressive symptoms and preventing relapse with effect sizes ranging from 0.11 to 1.65. Exposure-based cognitive therapy (d=2.09) appeared to be the most efficacious intervention, followed by mindfulness-based stress reduction programme (d=1.92), acceptance-based behaviour therapy (d=1.33), and stress less with mindfulness (d=1.31). Effect sizes were significantly associated with the length of intervention sessions but not related to methodological quality of studies.

Conclusion: The mindfulness-based interventions are efficacious for alleviating depressive symptoms in adults with mental disorders. The interventions could be used in conjunction with other treatments in clinical settings.

Comparable studies

Other systematic reviews and meta-analyses on meditation, most cited first.

Study Year Design Participants
Meditation Programs for Psychological Stress and Well-being Diverse adult clinical populations 2014 Meta-analysis n = 3,515
Mindfulness-Based Stress Reduction for Stress Management in Healthy People: A Review and Meta-Analysis Healthy subjects 2009 Systematic review and meta-analysis
The psychological effects of meditation: A meta-analysis. Nonclinical groups of adult meditators 2012 Meta-analysis n = 163
Efficacy of Mindfulness-Based Cognitive Therapy in Prevention of Depressive Relapse Adults with recurrent depression in full or partial remission 2016 Meta-analysis of individual patient data from randomized controlled trials n = 1,258
Mindfulness‐Based Stress Reduction and Mindfulness‐Based Cognitive Therapy – a systematic review of randomized controlled trials 2011 Systematic review

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