Corresponding Author: Andrew M. Chanen, MBBS(Hons), PhD, 35 Poplar Rd, Locked Bag 10, Parkville, VIC 3052, Australia (andrew.chanen@orygen.org.au).
Accepted for Publication: October 22, 2021.
Published Online: December 15, 2021. doi:10.1001/jamapsychiatry.2021.3637
Author Contributions: Profs Chanen and Cotton had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Concept and design: Chanen, Jackson, Cotton, Gleeson, Davey, McCutcheon.
Acquisition, analysis, or interpretation of data: Chanen, Betts, Cotton, Davey, Thompson, Perera, Rayner, Andrewes.
Drafting of the manuscript: Chanen, Betts, Jackson, Cotton, Gleeson, Davey, Andrewes.
Critical revision of the manuscript for important intellectual content: Jackson, Cotton, Gleeson, Davey, Thompson, Perera, Rayner, McCutcheon.
Statistical analysis: Betts, Cotton, Andrewes.
Obtained funding: Chanen, Jackson, Cotton, Gleeson, Davey, McCutcheon.
Administrative, technical, or material support: Chanen, Betts, Cotton, Gleeson, Davey, Perera, Rayner, McCutcheon.
Supervision: Chanen, Betts, Jackson, Gleeson, Davey, McCutcheon.
Conflict of Interest Disclosures: Prof Chanen reported grants from the Australian government’s National Health and Medical Research Council (NHMRC) during the conduct of the study and other support from the Helping Young People Early (HYPE) translational program outside the submitted work. Profs Chanen and McCutcheon cofounded and lead the HYPE clinical program, a government-funded program with continuous funding, and the HYPE translational program, which is a not-for-profit training program. No other disclosures were reported.
Funding/Support: This trial was funded by the National Health and Medical Research Council (NHMRC) (grant GNT0628739). NHMRC Career Development Fellowship supported Prof Cotton (APP1061998) and Prof Davey (APP1061757).
Role of the Funder/Sponsor: The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Data Sharing Statement: See Supplement 3.
Additional Contributions: The authors wish to thank the clients, families, and staff of the Helping Young People Early program at Orygen and Headspace Sunshine, and also Sarah Bendall, PhD, PGDipClinPsych, MA, Orygen and the Centre for Youth Mental Health, University of Melbourne, for training and supervising clinicians performing the befriending intervention and Patrick McGorry, MD, PhD, Orygen and the Centre for Youth Mental Health, University of Melbourne, for feedback on an earlier version of this manuscript. Drs Bendall and McGorry did not receive compensation for their contribution. This study is dedicated to the 3 young participants who died during the course of this study and to their families and friends.
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