Self-guided psychological treatment for depressive symptoms: a meta-analysis.
<h4>Background</h4>A number of trials have examined the effects of self-guided psychological intervention, without any contact between the participants and a therapist or coach. The results and sizes of these trials have been mixed. This is the first quantitative meta-analysis, aimed at...
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| Auteurs principaux: | , , , , , |
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| Format: | article |
| Langue: | EN |
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Public Library of Science (PLoS)
2011
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| Accès en ligne: | https://doaj.org/article/bd94ea61d23244ce952b48bebdb5f85c |
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| Résumé: | <h4>Background</h4>A number of trials have examined the effects of self-guided psychological intervention, without any contact between the participants and a therapist or coach. The results and sizes of these trials have been mixed. This is the first quantitative meta-analysis, aimed at organizing and evaluating the literature, and estimating effect size.<h4>Method</h4>We conducted systematic literature searches in PubMed, PsycINFO and Embase up to January 2010, and identified additional studies through earlier meta-analyses, and the references of included studies. We identified seven randomized controlled trials that met our inclusion criteria, with a total of 1,362 respondents. The overall quality of the studies was high. A post-hoc power calculation showed that the studies had sufficient statistical power to detect an effect size of d = 0.19.<h4>Results</h4>The overall mean effect size indicating the difference between self-guided psychological treatment and control groups at post-test was d = 0.28 (p<0.001), which corresponds to a NNT of 6.41. At 4 to 12 months follow-up the effect size was d = 0.23. There was no indication for significant publication bias.<h4>Conclusions</h4>We found evidence that self-guided psychological treatment has a small but significant effect on participants with increased levels of depressive symptomatology. |
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