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Meta-Analysis
. 2012 Jun 13:12:61.
doi: 10.1186/1471-244X-12-61.

Combination of pharmacotherapy and psychotherapy in the treatment of chronic depression: a systematic review and meta-analysis

Alessa von Wolff  1 , Lars P Hölzel, Annika Westphal, Martin Härter, Levente Kriston
Affiliations
Meta-Analysis

Combination of pharmacotherapy and psychotherapy in the treatment of chronic depression: a systematic review and meta-analysis

Alessa von Wolff et al. BMC Psychiatry. .

Abstract

Background: Chronic depression represents a substantial portion of depressive disorders and is associated with severe consequences. This review examined whether the combination of pharmacological treatments and psychotherapy is associated with higher effectiveness than pharmacotherapy alone via meta-analysis; and identified possible treatment effect modifiers via meta-regression-analysis.

Methods: A systematic search was conducted in the following databases: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, ISI Web of Science, BIOSIS, PsycINFO, and CINAHL. Primary efficacy outcome was a response to treatment; primary acceptance outcome was dropping out of the study. Only randomized controlled trials were considered.

Results: We identified 8 studies with a total of 9 relevant comparisons. Our analysis revealed small, but statistically not significant effects of combined therapies on outcomes directly related to depression (BR = 1.20) with substantial heterogeneity between studies (I² = 67%). Three treatment effect modifiers were identified: target disorders, the type of psychotherapy and the type of pharmacotherapy. Small but statistically significant effects of combined therapies on quality of life (SMD = 0.18) were revealed. No differences in acceptance rates and the long-term effects between combined treatments and pure pharmacological interventions were observed.

Conclusions: This systematic review could not provide clear evidence for the combination of pharmacotherapy and psychotherapy. However, due to the small amount of primary studies further research is needed for a conclusive decision.

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Figures

Figure 1
Figure 1
Study flow diagram.
Figure 2
Figure 2
Forest plot (response).
Figure 3
Figure 3
Funnel plot.
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