University of Hertfordshire


  • Melanie A. Katzman
  • Nuria Bara-Carril
  • Sophia Rabe-Hesketh
  • Ulrike Schmidt
  • Nicholas Troop
  • Janet Treasure
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Original languageEnglish
Pages (from-to)656-663
Number of pages8
JournalPsychosomatic medicine
Publication statusPublished - Sep 2010


Objective: To conduct a randomized, controlled, two-stage trial in the treatment of bulimia nervosa, comparing cognitive-behavioral therapy (CBT) versus motivational enhancement in Phase 1 followed by group versus individual CBT in Phase 2. Methods: A total of 225 patients with bulimia nervosa or eating disorder not otherwise specified (EDNOS) were recruited into a randomized controlled trial lasting 12 weeks with follow-ups at 1 year and 2.5 years. Results: Patients improved significantly across all of the interventions with no differences in outcome or treatment adherence. Including motivational enhancement therapy rather than a CBT first phase of treatment did not affect outcome. Conclusions: Outcome differences between individual and group CBT were minor, suggesting that group treatment prefaced by a short individual intervention may be a cost-effective alternative to purely individual treatment.

ID: 463697