A 10-session cognitive-behavioral therapy (CBT-T) for eating disorders: Outcomes from a case series of nonunderweight adult patients

Waller, Glenn, Tatham, Madeleine, Turner, Hannah, Mountford, Victoria A., Bennetts, Alison, Bramwell, Kate, Dodd, Julie and Ingram, Lauren (2018) A 10-session cognitive-behavioral therapy (CBT-T) for eating disorders: Outcomes from a case series of nonunderweight adult patients. International Journal of Eating Disorders. (doi:10.1002/eat.22837).

Abstract

Objective: Existing forms of evidence-based cognitive behavior therapy for eating disorders (CBT-ED) are relatively effective for nonunderweight cases. However, they are also expensive compared to CBT for other disorders. This study reports the first outcomes for a shorter, 10-session form of CBT-ED (CBT-T) for such cases, designed to be less demanding of resources. 

Method: A case series of 106 nonunderweight eating disordered cases were considered for this effectiveness study. A protocolized 10-session version of CBT-ED was delivered by clinical assistants, under supervision. Measures assessed eating attitudes and behaviors, anxiety, depression, personality pathology, and the working alliance. Intention-to-treat analyses were used. 

Results: Suitability, acceptability, working alliance ratings, and retention were all positive. Outcomes by the end of therapy and at three-month follow-up were positive for all symptoms, with levels of change, abstinence and remission that were comparable to those from effectiveness studies of longer forms of CBT. Higher levels of pretreatment anxiety predicted retention in treatment, but no factors predicted poorer response. Early change in eating attitudes and the working alliance were the strongest predictors of a positive response. 

Discussion: This 10-session form of CBT-ED for nonunderweight eating disorders performed at a level that is comparable to versions of CBT-ED that are twice as long, despite being delivered by nonspecialist therapists. Replication and longer-term follow-ups are needed to ensure retained effects. However, CBT-T has promise as a therapy for use in a range of healthcare settings, to enhance access to treatment for such eating disorders.

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