Effectiveness of cognitive-behavioral treatment for major depressive disorder in a university psychology clinic.

Major Depressive Disorder (MDD) is the most prevalent mental disorder in our environment, and one of the main causes of disability. While several empirically supported treatments (ESTs) for MDD exist, some doubts have been cast on the applicability--in time, components, and effectiveness--of these ESTs in routine clinical practice. A few attempts have been made to contrast the effectiveness of ESTs, but usually the precise components of the treatment developed are not considered in detail. The purpose of this study is to analyze the components of an EST-based treatment on a sample of 69 MDD cases from a University Psychology Clinic, and to benchmark them against the results of published efficacy studies on ESTs (behavioral activation, cognitive therapy, interpersonal therapy). Results show that treatments delivered at this clinical facility are similar in components, length, and effectiveness (in effect size, completers and improved ratio) to the benchmarked studies. Cognitive restructuring is the most frequent component of the delivered treatments. Therapy results show a 3.12 effect size, and a 55.1% improved ratio over initial sample, an 80% of completers. Results and limitations of the current study, especially those related to sample and center characteristics, are discussed.