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Published in: Social Psychiatry and Psychiatric Epidemiology 11/2014

Open Access 01-11-2014 | Invited Reviews

Effectiveness of peer-delivered interventions for severe mental illness and depression on clinical and psychosocial outcomes: a systematic review and meta-analysis

Authors: Daniela C. Fuhr, Tatiana Taylor Salisbury, Mary J. De Silva, Najia Atif, Nadja van Ginneken, Atif Rahman, Vikram Patel

Published in: Social Psychiatry and Psychiatric Epidemiology | Issue 11/2014

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Abstract

Purpose

To evaluate the effectiveness of peer-delivered interventions in improving clinical and psychosocial outcomes among individuals with severe mental illness (SMI) or depression.

Methods

Systematic review and meta-analysis of randomised controlled trials comparing a peer-delivered intervention to treatment as usual or treatment delivered by a health professional. Random effect meta-analyses were performed separately for SMI and depression interventions.

Results

Fourteen studies (10 SMI studies, 4 depression studies), all from high-income countries, met the inclusion criteria. For SMI, evidence from three high-quality superiority trials showed small positive effects favouring peer-delivered interventions for quality of life (SMD 0.24, 95 % CI 0.08–0.40, p = 0.003, I 2 = 0 %, n = 639) and hope (SMD 0.24, 95 % CI 0.02–0.46, p = 0.03, I 2 = 65 %, n = 967). Results of two SMI equivalence trials indicated that peers may be equivalent to health professionals in improving clinical symptoms (SMD −0.14, 95 % CI −0.57 to 0.29, p = 0.51, I 2 = 0 %, n = 84) and quality of life (SMD −0.11, 95 % CI −0.42 to 0.20, p = 0.56, I 2 = 0 %, n = 164). No effect of peer-delivered interventions for depression was observed on any outcome.

Conclusions

The limited evidence base suggests that peers may have a small additional impact on patient’s outcomes, in comparison to standard psychiatric care in high-income settings. Future research should explore the use and applicability of peer-delivered interventions in resource poor settings where standard care is likely to be of lower quality and coverage. The positive findings of equivalence trials demand further research in this area to consolidate the relative value of peer-delivered vs. professional-delivered interventions.
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Metadata
Title
Effectiveness of peer-delivered interventions for severe mental illness and depression on clinical and psychosocial outcomes: a systematic review and meta-analysis
Authors
Daniela C. Fuhr
Tatiana Taylor Salisbury
Mary J. De Silva
Najia Atif
Nadja van Ginneken
Atif Rahman
Vikram Patel
Publication date
01-11-2014
Publisher
Springer Berlin Heidelberg
Published in
Social Psychiatry and Psychiatric Epidemiology / Issue 11/2014
Print ISSN: 0933-7954
Electronic ISSN: 1433-9285
DOI
https://doi.org/10.1007/s00127-014-0857-5

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