| Summary: | Background Trauma-focused cognitive behavioural therapy (TF-CBT) is an efficacious treatment model for children and adolescents with trauma-related disorders. However, few studies have been conducted in community settings, and there have been no randomized controlled trials in Asian countries. Objective To evaluate the effectiveness of TF-CBT in regular community settings in Japan through comparison with a waitlist with minimal services control condition. Method Thirty Japanese children and adolescents with posttraumatic stress disorder symptoms (22 females, eight males, mean age = 13.90, range = 6–18) were randomly assigned to 12 sessions of TF-CBT or the waitlist control condition. The primary outcome measure was the Kiddie Schedule for Affective Disorders and Schizophrenia score assessed by blinded evaluators one month later. Results The mean number of sessions was 12 (range: 11–13) in the TF-CBT group and 4.87 (range: 3–7) in the control group. Intention to treat analysis showed that the TF-CBT group achieved significantly greater symptom reduction than did the control group. The effect size (Cohen’s d) between the TF-CBT and control groups was 0.96 (p =.014) for posttraumatic symptoms and 1.15 (p =.004) for depressive symptoms. However, the TF-CBT group did not show better results than the control group with regard to improvements in anxiety symptoms, psychosocial functioning, and behavioural problems. Conclusions The findings provided preliminary evidence of the effectiveness of TF-CBT for treating youth with trauma in community mental health facilities. TF-CBT in the Japanese context proved identical to the original, demonstrating that it is also suitable for use with children and adolescents in non-Western settings.
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