i-TREAT: An Internet-based Treatment for Eating Disorders

This clinical study aims to compare the efficacy of an internet-based therapist-guided self-help intervention (named i-TREAT) in reducing eating disorder symptoms in Danish adolescents and adults with Other Specified Feeding or Eating Disorders (OSFED). The study is a randomized controlled trial, comparing the intervention group, receiving i-TREAT, with an active waitlist-control group, receiving online mindfulness material. The investigators hypothesize the intervention group to be superior to the waitlist-control group in terms of 1) reducing eating disorder symptoms and 2) increasing quality of life. The internet-based intervention (i-TREAT) consists of 12 online treatment sessions. It is mainly based on Cognitive Behavior Therapy while inspired by Acceptance and Commitment Therapy. Participants are instructed to complete session-related tasks and receive written feedback from their therapist throughout the treatment. Furthermore, the intervention is also supported by text, illustrations, videos, and a chat function, allowing asynchronous text messaging with the therapist. The treatment courses are expected to run for up to 12 weeks. Participants completing the 12-week waitlist are subsequently offered the i-TREAT intervention. The investigators expect to include 63 participants in each group, who will be recruited through 1) self-referral on the project's website and 2) referral from mental health institutions and doctors.