Munder, Thomas; Gerger, Heike; Trelle, Sven; Barth, Jürgen (2011). Testing the allegiance bias hypothesis: a meta-analysis. Psychotherapy research, 21(6), pp. 670-684. Abingdon, UK: Routledge 10.1080/10503307.2011.602752
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This meta-analysis investigated whether the association between researcher allegiance (RA) and the relative effect of two psychotherapies can be explained through the methodological weaknesses of the treatment comparisons. Seventy-nine comparisons of psychotherapies for depression or posttraumatic stress disorder (PTSD) were included. Methodological quality (MQ) was investigated as both a moderator and a mediator of the RA-outcome association. MQ included balanced nonspecific factors, balanced specific factors, conceptual quality, patients-per-therapist ratio, randomization to conditions and outcome assessment. The RA-outcome association was stronger when the MQ was low, suggesting a buffering effect of MQ. In addition, differences in the conceptual quality of treatments mediated the effect of RA on outcome. The results support the view that RA acts as a bias in treatment comparisons.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine (ISPM) |
UniBE Contributor: |
Munder, Thomas, Gerger, Heike, Trelle, Sven, Barth, Jürgen |
ISSN: |
1050-3307 |
Publisher: |
Routledge |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:21 |
Last Modified: |
05 Dec 2022 14:06 |
Publisher DOI: |
10.1080/10503307.2011.602752 |
PubMed ID: |
21797736 |
Web of Science ID: |
000299430500005 |
BORIS DOI: |
10.7892/boris.7265 |
URI: |
https://boris.unibe.ch/id/eprint/7265 (FactScience: 212456) |
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