Analysis
aggression
RECRUITMENT
To investigate the acceptability of MBT-CD and scientific assessments, recruitment and therapy adherence rates as well as mean, standard deviation and range of attended session numbers in completed treatments were calculated. Moreover, oral evaluations of treatment and scientific assessments from treatment completers assessed via semi-structured interviews adapted from Krause et al. [To investigate necessary organizational resources to conduct an MBT-CD RCT, recruitment numbers were descriptively investigated with regard to adaptations made throughout the study, study center characteristics and referring institutions. Additionally, to gain insight into the success of MBT trainings and supervision for MBT implementation, the MBT adherence and competence scale [MBT-ACS, 17, For video selection, only completed therapies were chosen, ensuring that supervision for therapy was provided for several hours. For those therapists who had more than one completed therapy, the one therapists subjectively believed was most on the model was selected. For each selected therapy, two sessions were randomly chosen (one in the first and one in the second half of therapy). In Heidelberg, the criteria resulted in four therapies. In Mainz, out of five therapists fulfilling these criteria, only the four with a CBT orientation (another had a psychodynamic orientation) were chosen for reasons of homogeneity within centers. Thus overall, 16 sessions were rated for MBT adherence.Moreover, an a priori sample size estimation was conducted with G*Power and data on recruitment and drop-out rates were used for estimation of a prospective RCT’s exemplary study duration and necessary number of cooperating centers.For the preliminary pilot pre–post analysis, complete data on core measures (adolescents’ aggression, mentalizing, personality functioning) were used (available for 