Footnotes

• Contributor WHM, KJS, JD and PM contributed to the overall conceptualisation, writing and review of this manuscript.

  OTO and CFF contributed to the Delphi technique, writing and review of the manuscript. AKH

  contributed to the methodological concepts related to the systematic reviews, writing and review of this manuscript.

• Competing interests WHM is the medical director of the National Hockey League. He has received research grant support through the University of Calgary from the Canadian Institutes of Health Research, Alberta Innovates Health Solutions, the FIFA, Alberta Children’s Hospital Research Institute and the Hotchkiss Brain Institute. He is the founding chair of the Sport Injury Prevention Research Centre, which is one of the International Research Centres for Prevention of Injury and Protection of Athlete Health supported by the IOC. He has a clinical consulting practice in sport medicine at the University of Calgary Sport Medicine Centre. He is an expert group member of the IOC Medical Commission and has received travel funding in that capacity. KJS is a physiotherapy consultant at Evidence Sport and Spinal Therapy in Calgary, Alberta, Canada. She has received honoraria for speaking at various conferences. She has received research grant support through the University of Calgary from the Alberta Children’s Hospital Research Institute, Hotchkiss Brain Institute and the Canada Foundation for Innovation (including matching funds through the Province of Alberta). She is a faculty member at the Sport Injury Prevention Research Centre, within is one of the International Research Centres for Prevention of Injury and Protection of Athlete Health supported by the IOC. CFF is a member of World Rugby’s Independent Expert Panel on Concussion. She was not involved in any other aspects of the International Consensus Conference on Concussion in Sport except for the planning for the Delphi study and review and editing of the manuscript. PM is a coinvestigator, collaborator, or consultant on grants relating to mild TBI funded by several governmental organisations. He is directly employed by the National Health and Medical Research Council of Australia and is based at the Florey Institute of Neuroscience and Mental Health. He is co-chair of the Australian Centre for Research into Sports Injury and its Prevention (ACRISP), which is one of the International University Research Centres for Prevention of Injury and Protection of Athlete Health supported by the IOC. He is co-chair of the International Concussion in Sport Group. He has a clinical and consulting practise in general and sports neurology. He receives book royalties from McGraw-Hill and was employed in an editorial capacity by the British Medical Journal Publishing Group from 2001 to 2008. He has been reimbursed by the government, professional scientific bodies and sporting bodies for travel costs related to presenting research on mild TBI and sport-related concussion at meetings, scientific conferences and symposiums. He received consultancy fees in 2010 from Axon Sports (US) for the development of educational material (which was not renewed) and has received research funding since 2001 from Cogstate Inc. He has not received any research funding, salary or other monies from the Australian Football League, FIFA or the NFL. The Australian Football League funds research at the Florey Institute under a legal memorandum and PM does not receive any money from this industry-funded research. PM is a cofounder and shareholder in two biomedical companies (involved in eHealth and Compression garment technologies) but does not hold any individual shares in any company related to concussion or brain injury assessment or technology.

• Provenance and peer review Not commissioned; externally peer reviewed