Brief cognitive behavioural therapy for binge-eating disorder: clinical effectiveness in a routine clinical setting

Abstract

Brief cognitive behavioural therapy (CBT) is effective in working with non-underweight eating disorder patients across transdiagnostic groups. However, it is not clear whether it will be as effective in the treatment of binge-eating disorder, where emotional eating is likely to play a larger role than starvation-driven eating. This case series tested whether brief, 10-session CBT (CBT-T) would be effective in a case series of 53 patients with binge-eating disorder. Attrition rates were comparable to previous research. Eating attitudes, binge frequency, anxiety and depression were measured. Remission was measured comparing different categorical methods: ‘cut-off’; reliable change index (RCI); and clinically significant change (CSC). CBT-T was effective for binge-eating disorder patients, at comparable levels to other non-underweight patients. All measures of pathology were significantly reduced, with large to moderate effect sizes. When categorical changes were used to indicate remission, RCI and CSC levels were more appropriate than existing cut-off methods, potentially because of the lower levels of initial restrained eating in this clinical group. CBT-T’s effectiveness in transdiagnostic groups is replicated in binge-eating disorder patients, despite their greater level of emotionally driven eating. More stringent definitions of remission (CSC and RCI) should be used more widely, to ensure realistic estimates.