[Results of the pilot project of the Techniker-Krankenkasse "quality monitoring in outpatient psychotherapy" - a commentary by the project's scientific advisory board].

In order to objectify the discussion about a project of the TK, a German health insurance company, which aimed to analyse the effects of a specific quality monitoring system on psychotherapy outcomes, the scientific advisory board summarized the main results of the study. The main results were cited from the final report which confirms the confirmatory character of the study design that aimed to test the hypothesis of the superiority of the quality monitoring system compared to the system of peer review-based approval of therapies. The quality monitoring system represents a complex intervention which is composed of several single intervention elements. Thus, the study results allow only the conclusion that the overall complex interven-tion did not prove to be superior. Further studies are needed with regard to the effectiveness of single components. Finally, the issues of representativeness and selectivity of the study and the sample are discussed and their importance is -underlined by reference to the literature.