The efficacy of Acceptance and Commitment Therapy: an updated systematic review and meta-analysis
- PMID: 25193001
- DOI: 10.1016/j.brat.2014.07.018
The efficacy of Acceptance and Commitment Therapy: an updated systematic review and meta-analysis
Abstract
Acceptance and Commitment therapy (ACT) has attracted a lot of interest during the last 10-15 years with a strong increase of the number of randomized controlled trials (RCTs). The present review and meta-analysis includes 60 RCTs (4234 participants) on psychiatric disorders, somatic disorders, and stress at work. The mean effect size across all comparisons was small (0.42). Compared to the Öst (2008) meta-analysis there was no significant improvement in methodological quality and deterioration in effect size (from 0.68). When ACT was compared to various forms of cognitive or behavioral treatments a small and non-significant effect size of 0.16 was obtained. An evidence-base evaluation showed that ACT is not yet well-established for any disorder. It is probably efficacious for chronic pain and tinnitus, possibly efficacious for depression, psychotic symptoms, OCD, mixed anxiety, drug abuse, and stress at work, and experimental for the remaining disorders.
Keywords: ACT; Evidence-base; Meta-analysis; Methodological quality; Systematic review.
Copyright © 2014 Elsevier Ltd. All rights reserved.
Comment in
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Departing from the essential features of a high quality systematic review of psychotherapy: A response to Öst (2014) and recommendations for improvement.Behav Res Ther. 2017 Oct;97:259-272. doi: 10.1016/j.brat.2017.05.016. Epub 2017 May 29. Behav Res Ther. 2017. PMID: 28651775
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Rebuttal of Atkins et al. (2017) critique of the Öst (2014) meta-analysis of ACT.Behav Res Ther. 2017 Oct;97:273-281. doi: 10.1016/j.brat.2017.08.008. Behav Res Ther. 2017. PMID: 28911853
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Editor's Note.Behav Res Ther. 2018 Mar;102:67. doi: 10.1016/j.brat.2017.12.006. Epub 2017 Dec 26. Behav Res Ther. 2018. PMID: 29307439 No abstract available.
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