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The Maudsley Outpatient Study of Treatments for Anorexia Nervosa and Related Conditions (MOSAIC): Comparison of the Maudsley Model of Anorexia Nervosa Treatment for Adults (MANTRA) With Specialist Supportive Clinical Management (SSCM) in Outpatients With Broadly Defined Anorexia Nervosa: A Randomized Controlled Trial

Research output: Contribution to journalArticle

Ulrike Schmidt, Nicholas Magill, Bethany Renwick, Alexandra Keyes, Martha Kenyon, Hannah Dejong, Anna Lose, Hannah Broadbent, Rachel Loomes, Huma Yasin, Charlotte Watson, Shreena Ghelani, Eva-Maria Bonin, Lucy Serpell, Lorna Richards, Eric Johnson-Sabine, Nicky Boughton, Linette Whitehead, Jennifer Beecham, Janet Treasure & 1 more Sabine Landau

Original languageEnglish
Pages (from-to)796-807
JournalJournal of Consulting and Clinical Psychology
Issue number4
Accepted/In press18 May 2015
PublishedAug 2015


King's Authors


OBJECTIVE: Anorexia nervosa (AN) in adults has poor outcomes, and treatment evidence is limited. This study evaluated the efficacy and acceptability of a novel, targeted psychological therapy for AN (Maudsley Model of Anorexia Nervosa Treatment for Adults; MANTRA) compared with Specialist Supportive Clinical Management (SSCM).

METHOD: One hundred forty-two outpatients with broadly defined AN (body mass index [BMI] ≤ 18.5 kg/m2) were randomly allocated to receive 20 to 30 weekly sessions (depending on clinical severity) plus add-ons (4 follow-up sessions, optional sessions with dietician and with carers) of MANTRA (n = 72) or SSCM (n = 70). Assessments were administered blind to treatment condition at baseline, 6 months, and 12 months after randomization. The primary outcome was BMI at 12 months. Secondary outcomes included eating disorders symptomatology, other psychopathology, neuro-cognitive and social cognition, and acceptability. Additional service utilization was also assessed. Outcomes were analyzed using linear mixed models.

RESULTS: Both treatments resulted in significant improvements in BMI and reductions in eating disorders symptomatology, distress levels, and clinical impairment over time, with no statistically significant difference between groups at either 6 or 12 months. Improvements in neuro-cognitive and social-cognitive measures over time were less consistent. One SSCM patient died. Compared with SSCM, MANTRA patients rated their treatment as significantly more acceptable and credible at 12 months. There was no significant difference between groups in additional service consumption.

CONCLUSIONS: Both treatments appear to have value as first-line outpatient interventions for patients with broadly defined AN. Longer term outcomes remain to be evaluated.

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