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Translated article: Effectiveness and Outcome Prediction of Outpatient Cognitive Behavioral Therapy

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journal contribution
posted on 30.05.2017, 12:26 by Melanie Hasenauer, Volker Tschuschke
Background: Investigations regarding the effectiveness of
outpatient psychotherapy for various psychological disorders
treated in naturalistic settings are rare. The present
study investigates several psychological predictors of outpatient
cognitive behavioral therapy in a largely unselected
patient sample treated by trainees in psychotherapy under
supervision. Patients and Methods: In this prospective
study, 73 patients with diverse diagnoses according to the
International Classification of Diseases 10 (ICD-10) were examined
before and after treatment. Effect sizes (Cohen’s d)
were used to assess the treatment outcome. To predict
treatment outcome, the strategy of multiple outcome criteria
was used, calculating a load score and an outcome score
from several outcome measures. Sociodemographic and
psychological predictor variables were tested in a mixedmodel
analysis. Results: Pre-post analyses showed high effect
sizes between d = 0.98 and d = 1.43. The severity of the
psychological problems at treatment start was found to be a
positive outcome predictor, whereas an anxiety disorder
and a lower level of education were found to be significant
negative treatment outcome predictors. Other variables
were not correlated with outcome. Conclusions: Cognitive
behavioral therapy in a clinical outpatient setting carried out
by psychologists in psychotherapy training under supervision can be very effective overall. Patients with anxiety disorders draw the least benefit whereas patients with adaptation and personality disorders benefit the most. Questions arising from the different results are discussed and some suggestions for future research are made.