title: Predictors and moderators of response to enhanced cognitive behaviour therapy and interpersonal psychotherapy for the treatment of eating disorders.
abstract: Consistent predictors, and more especially moderators, of response to psychological treatments for eating disorders have not been identified. The present exploratory study examined predictors and moderators of outcome in adult patients who took part in a randomised clinical trial comparing two leading treatments for these disorders, enhanced cognitive behavioural therapy (CBT-E) and interpersonal psychotherapy (IPT). Four potentially important findings emerged. Firstly, patients with a longer duration of disorder were less likely to benefit from either treatment. Second, across the two treatments the presence, at baseline, of higher levels of over-evaluation of the importance of shape predicted a less good treatment outcome. Third DSM-IV diagnosis did not predict treatment outcome. Fourth, with the exception of patients with baseline low self-esteem who achieved a better outcome with CBT-E, it was generally not possible to identify a subgroup of patients who would differentially benefit from one or other treatment.
authors.affiliation: Oxford University, Department of Psychiatry, UK. Electronic address: zafra.cooper@psych.ox.ac.uk.
authors.forename: Zafra
authors.initials: Z
authors.lastname: Cooper
authors.affiliation: London School of Hygiene and Tropical Medicine, Department of Medical Statistics, UK.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Allen
authors.affiliation: Oxford University, Department of Psychiatry, UK.
authors.forename: Suzanne
authors.initials: S
authors.lastname: Bailey-Straebler
authors.affiliation: Oxford University, Department of Psychiatry, UK.
authors.forename: Shawnee
authors.initials: S
authors.lastname: Basden
authors.affiliation: Oxford University, Department of Psychiatry, UK.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Murphy
authors.affiliation: Oxford University, Department of Psychiatry, UK.
authors.forename: Marianne E
authors.initials: ME
authors.lastname: O'Connor
authors.affiliation: Oxford University, Department of Psychiatry, UK.
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Fairburn
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001828:Body Image / Q000523:psychology; D015928:Cognitive Behavioral Therapy; D039721:Diagnostic and Statistical Manual of Mental Disorders; D001068:Feeding and Eating Disorders / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D006801:Humans; D008875:Middle Aged; D011613:Psychotherapy; D012649:Self Concept; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
keywords: Eating disorders; Enhanced cognitive behavioural therapy; Interpersonal psychotherapy; Moderators; Outcome; Predictors