Submitted for Publication: February 14, 2014; final revision received September 3, 2014; accepted September 3, 2014.
Published Online: January 28, 2015. doi:10.1001/jamapsychiatry.2014.2463.
Study concept and design: Szatmari, Georgiades, Bennett, Bryson, Roberts, Smith, Vaillancourt, Volden, Waddell, Zwaigenbaum.
Acquisition, analysis, or interpretation of data: Georgiades, Duku, Bryson, Fombonne, Mirenda, Smith, Zwaigenbaum, Elsabbagh, Thompson.
Drafting of the manuscript: Szatmari, Georgiades, Duku, Bennett, Bryson, Smith, Elsabbagh.
Critical revision of the manuscript for important intellectual content: Georgiades, Bennett, Fombonne, Mirenda, Roberts, Smith, Vaillancourt, Volden, Waddell, Zwaigenbaum, Elsabbagh, Thompson.
Statistical analysis: Georgiades, Duku, Bennett, Vaillancourt.
Obtained funding: Szatmari, Bryson, Fombonne, Mirenda, Roberts, Smith, Volden, Waddell, Zwaigenbaum.
Administrative, technical, or material support: Georgiades, Bryson, Smith, Elsabbagh, Thompson.
Study supervision: Smith, Zwaigenbaum.
Conflict of Interest Disclosures: None reported.
Funding/Support: Dr Georgiades was supported by an Autism Research Training fellowship from the Canadian Institutes of Health Research. This study was supported by the Canadian Institutes of Health Research, NeuroDevNet, Autism Speaks, the Government of British Columbia, the Alberta Innovates Health Solutions, and the Sinneave Family Foundation.
Role of the Funder/Sponsor: The funding sources 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.
Group Information: These Pathways in ASD Study Team members had equal contribution to the study and are listed here alphabetically: Liliana Abruzzese, Megan Alexander, Susan Bauld, Ainsley Boudreau, MASP, Colin Andrew Campbell, MA, Mike Chalupka, BSc, BA(Hon), Lorna Colli, DCS, Melanie Couture, PhD, Bev DaSilva, Vikram Dua, MD, Miriam Elfert, PhD, Lara El-Khatib, PhD, Lindsay Fleming, MA, Kristin Fossum, PhD, Nancy Garon, PhD, Shareen Holly, Stephanie Jull, PhD, Karen Kalynchuk, MA, Kathryne MacLeod, BSc, Preetinder Narang, MEd, Julianne Noseworthy, MA, Irene O’Connor, MEd Psych, Kaori Ohashi, MA, Sarah Peacock, BA, Teri Phillips, BSc, Sara Quirke, MA, Katie Rinald, MA, Jennifer Saracino, MA, Cathryn Schroeder, MA, Cody Shepherd, BA(Hon), Rebecca Simon, PhD, Mandy Steiman, PhD, Richard Stock, PhD, Benjamin Taylor, BSc, Lee Tidmarsh, MD, Larry Tuff, PhD, Kathryn Vaillancourt, Stephen Wellington, MD, Isabelle Yun, and Li Hong Zhong.
Additional Contributions: We thank the children and families who participated in the Pathways in ASD Study. We also acknowledge the members of the Pathways in ASD Study Team.