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- W2201728466 endingPage "e0137864" @default.
- W2201728466 startingPage "e0137864" @default.
- W2201728466 abstract "Background The efficacy of antidepressant medication has been shown empirically to be overestimated due to publication bias, but this has only been inferred statistically with regard to psychological treatment for depression. We assessed directly the extent of study publication bias in trials examining the efficacy of psychological treatment for depression. Methods and Findings We identified US National Institutes of Health grants awarded to fund randomized clinical trials comparing psychological treatment to control conditions or other treatments in patients diagnosed with major depressive disorder for the period 1972–2008, and we determined whether those grants led to publications. For studies that were not published, data were requested from investigators and included in the meta-analyses. Thirteen (23.6%) of the 55 funded grants that began trials did not result in publications, and two others never started. Among comparisons to control conditions, adding unpublished studies (Hedges’ g = 0.20; CI95% -0.11~0.51; k = 6) to published studies (g = 0.52; 0.37~0.68; k = 20) reduced the psychotherapy effect size point estimate (g = 0.39; 0.08~0.70) by 25%. Moreover, these findings may overestimate the true effect of psychological treatment for depression as outcome reporting bias could not be examined quantitatively. Conclusion The efficacy of psychological interventions for depression has been overestimated in the published literature, just as it has been for pharmacotherapy. Both are efficacious but not to the extent that the published literature would suggest. Funding agencies and journals should archive both original protocols and raw data from treatment trials to allow the detection and correction of outcome reporting bias. Clinicians, guidelines developers, and decision makers should be aware that the published literature overestimates the effects of the predominant treatments for depression." @default.
- W2201728466 created "2016-06-24" @default.
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- W2201728466 date "2015-09-30" @default.
- W2201728466 modified "2023-10-16" @default.
- W2201728466 title "Does Publication Bias Inflate the Apparent Efficacy of Psychological Treatment for Major Depressive Disorder? A Systematic Review and Meta-Analysis of US National Institutes of Health-Funded Trials" @default.
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- W2201728466 doi "https://doi.org/10.1371/journal.pone.0137864" @default.
- W2201728466 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4589340" @default.
- W2201728466 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26422604" @default.
- W2201728466 hasPublicationYear "2015" @default.
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