Enhancing psychotherapy for bulimia nervosa and binge eating disorder
A randomised trial of cognitive behaviour therapy, schema focussed therapy and appetite enhanced cognitive therapy in the treatment for bulimia nervosa and binge eating disorder to reduce the frequency of binge eating episodes after six months of weekly and six months of monthly therapy
Health Research Council of New Zealand
200 participants
May 17, 2005
Interventional
Conditions
Summary
Bulimia nervosa (BN) and binge eating disorder (BED) are eating disorders that share a pattern of binge eating or overeating within discrete short time periods. CBT is the most effective treatment for BN and BED, and uses both cognitive and behavioural strategies. However, in spite of CBT being the most effective treatment for BN and BED, fewer than half of individuals fully recover. The proposed study aims to evaluate whether the effectiveness of standard CBT may be enhanced in two different ways. Schema therapy (ST) enhances the cognitive component of CBT by focusing on changing deeper level beliefs or schemas. Appetite enhanced CBT (CBT-A) enhances the behavioural component of CBT by focusing on hunger and satiety. The study will randomise women with BN or BED to standard CBT, ST or CBT-A
Eligibility
Inclusion Criteria1
- i) current primary diagnosis of BN or BED; ii) Body mass index (BMI) > 17.5.
Exclusion Criteria1
- Current severe major depression (HDRS>20); ii) current severe psychoactive substance dependence; iii) current or past bipolar I disorder or schizophrenia; iv) developmental learning disorder or cognitive impairment; v) major medical or neurological illness; vi) current severe medical complications of an eating disorder; vii) currently taking psychoactive medication and unwilling to undergo a supervised drug wash-out period (the longer of two weeks or five drug half-lives); viii) failure to respond to a previous adequate trial of one of the psychotherapies in this study.
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Interventions
CBT-B (Beck); CBT-S (Schema focused); CBT-A (Appetite enhanced). Duration: 12 months.
Locations(1)
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ACTRN12605000721606