Psychotherapy for eating disorders: A meta-analysis of direct comparisons
Abstract
Objective: We conducted a meta-analysis of randomized controlled trials (RCTs) of bona fide psychotherapy for adults with eating disorders (EDs). Method: Thirty-five RCTs with 54 direct comparisons were included. The majority of RCTs included participants with bulimia nervosa and/or binge-ED, while only two RCTs included participants with anorexia nervosa, and three RCTs included participants with an ED not otherwise specified. Results: There was a clear advantage of bona fide psychotherapy over wait-list controls. Bona fide psychotherapy was superior to non-bona fide treatment; however, the majority of results were not stable. There were no significant differences between bona fide cognitive-behavioral therapy (CBT) and bona fide non-CBT, with the exception of bona fide CBT resulting in greater reductions in ED psychopathology assessed by the ED Examination, which primarily assesses maintenance factors according to the CBT model. Conclusions: Generally, the results indicate that any bona fide psychotherapy will be equally effective. While the number of trials remains modest, we hope that as more research becomes available, treatment guidelines can be updated, and more evidence-based treatment options will be available for treating EDs.
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