About the Authors

Catherine Henderson

C.Henderson@lse.ac.uk

Affiliation Personal Social Services Research Unit, London School of Economics and Political Science, London, United Kingdom

Martin Knapp

Affiliation Personal Social Services Research Unit, London School of Economics and Political Science, London, United Kingdom

Ksenija Yeeles

Affiliation Department of Psychiatry, University of Oxford, Oxford, United Kingdom

Stephen Bremner

Current address: Division of Primary Care and Public Health, Brighton and Sussex Medical School, Mayfield House, University of Brighton, Brighton, United Kingdom

Affiliation Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom

Sandra Eldridge

Affiliation Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom

Anthony S. David

Affiliation Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom

Nicola O’Connell

Current address: Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom

Affiliation Unit for Social and Community Psychiatry, WHO Collaborating Centre for Mental Health Services Development, Queen Mary University of London, London, United Kingdom

Tom Burns

Affiliation Department of Psychiatry, University of Oxford, Oxford, United Kingdom

Stefan Priebe

Affiliation Unit for Social and Community Psychiatry, WHO Collaborating Centre for Mental Health Services Development, Queen Mary University of London, London, United Kingdom

Competing Interests

ASD has received personal fees from Janssen-Cilag and Eli Lilly, and TB received lecture fees from Janssen and Otsuka during the conduct of the study. CH, MK, KY, SB, SE, NO and SP declare that they have no conflicts of interest. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MK SP KY SB SE ASD TB CH. Performed the experiments: CH. Analyzed the data: CH. Wrote the paper: CH MK SP KY SB SE ASD NO TB. Conducted economic analysis: CH. Data collection and tools design: KY CH (economic data collection). Development of intervention: SP KY TB. Designing and conducting statistical analysis: SB SE. Study management: SP KY TB. Study supervision: SB, ASD, SE. Monitored recruitment and data collection: SP, KY, TB. Study implementation, data management and data cleaning: KY NO.