Participants were recruited from the Centre for Psychotherapy's treatment program for eating disorders. The use of CBT-e has been defined as "informed" because the therapists who were trained in CBT-e were trialling it for the first time, and no adherence measures were undertaken. Treatment outcome measures were administered at baseline, after six months of treatment, after 12 months of treatment, and again at one year post treatment follow up. It was part of a larger study that originally aimed to examine all treatment modalities offered. As such, 17 participants were offered CBT-e, three were offered ACT, and two were offered conversational model therapy. The treatments were not compared due to small numbers.