Objective: The purpose of Study 1 was to examine the relative efficacy of evidence-based treatments (EBTs) when compared to treatment-as-usual (TAU) for adults diagnosed with a personality disorder (PD). The purpose of Study 2 was to investigate the strength of the differences between bona fide psychotherapeutic treatments for PDs.

Method: Two separate computerized searches were conducted of: (a) studies that directly compared an EBT with a TAU for treatment of PDs, or (b) studies that compared at least two bona fide treatments for PDs. Meta-analytic methods were used to estimate the effectiveness of the treatments when compared to one another and to model how various confounding variables impacted the results of this comparative research.

Results: A total of 30 studies (Study 1; N=1662) were included in the meta-analysis comparing EBTs to TAU. A total of 12 studies (Study 2; N=723) were included in the meta-analysis comparing bona fide treatments. Study 1 found that EBTs were superior to TAU, although the TAU conditions were not comparable in many respects (e.g., not psychotherapy, lacking supervision, lacking training, etc.) to the EBT and there was significant heterogeneity in the effects. Study 2 found that some bona fide treatments were superior to others.

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http://dx.doi.org/10.1016/j.cpr.2013.08.003DOI Listing

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