Footnotes

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• Contributors JSP conceived the format of the Sports Concussion Office Assessment Tool and created the first version (SCOAT6). The concept of the tool was presented at the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. The SCOAT6 content was discussed at a dedicated Tools workshop at the conference and JSP tasked with creating the next iteration. These have been shared with coauthors of an accompanying editorial The Sports Concussion Office Assessment Tool 6 (SCOAT6): Background, rationale and development" who have made edits until this submitted version was finalised.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests GAD is a member of the Scientific Committee of the 6th International Consensus Conference on Concussion in Sport; an honorary member of the AFL Concussion Scientific Committee; Section Editor, Sport and Rehabilitation, NEUROSURGERY; and has attended meetings organised by sporting organisations including the NFL, NRL, IIHF, IOC and FIFA; however, has not received any payment, research funding or other monies from these groups other than for travel costs. RJE is a paid consultant for the NHL and co-chair of the NHL/ NHLPA Concussion Subcommittee. He is also a paid consultant and chair of the Major League Soccer concussion committee, and a consultant to the US Soccer Federation. He previously served as a neuropsychology consultant to Princeton University Athletic Medicine and EyeGuide. He is currently a co-PI for a grant funded by the NFL (NFL-Long) through Boston Children’s Hospital. He occasionally provides expert testimony in matters related to MTBI and sports concussion, and occasionally receives honoraria and travel support/reimbursement for professional meetings. PF is a coinvestigator on a research grant from the NFL’s 'Play Smart. PlaySafe.' Initiative and an Executive committee member of the Canadian Concussion Network (financed by the Canadian Institute of Health Research). He received honorarium for an Expert group discussion on blood biomarkers for concussion in December 2020. GWF has received travel expenses to attend academic meetings from World Rugby. He has also collaborated on research projects with World Rugby as chief or co-investigator. He is previous associate editor of the British Journal of Sports Medicine. He has not received any other payments or support from any sporting or commercial bodies. He has no other conflicts of interest. KGH is Research Development Director, Pac-12 Conference Member, Pac-12 Brain Trauma Task Force Member, NFL Head Neck and Spine Committee Deputy Editor, British Journal of Sports Medicine Head Football Physician, University of Washington Dr. K. Alix Hayden has nothing to disclose. SAH Co-founder and senior advisor, The Sports Institute at UW Medicine (unpaid), Centers for Disease Control and Prevention and National Center for Injury Prevention and Control Board Pediatric Mild Traumatic Brain Injury Guideline Workgroup (unpaid), Concussion in Sport Group (travel support), NCAA Concussion Safety Advisory Group (unpaid),Team Physician, Seattle Mariners, Former Team Physician, Seattle Seahawks, occasional payment for expert testimony, travel support for professional meetings ML is the CMO GB Boxing, CMO GB Snowsports. NE Director GB Taekwondo. NE Director SWA (share options). Director Active Movement. Director GB Obstacle course racing. Founder and medical board member of Safe MMA. Director of Marylebone Health Group. Private medical practice at ISEH 170 Tottenham Court Road. Private medical practice Marylebone Health Group. MMa Sport and exercise medicine physician working in private consulting practice. Shareholder of Olympic Park Sports Medicine Centre in Melbourne. Ex-senior physician at the Hawthorn Football Club (AFL) Ex-Chief Executive Officer of the AFL Doctors Association. Research grants received from the Australian Football League, outside the submitted work. Travel support received from the Australian Football League, FIFA and the International Olympic Committee to attend and present at international conferences. Member of the Scientific Committee for the 6th International Consensus Conference on Concussion in Sport. Honorary member of the International Concussion in Sport Group. Honorary member of the Australian Rugby Union Concussion Advisory Group. Independent Concussion Consultant for World Rugby. MMc has received research funding to the Medical College of Wisconsin from the National Institutes of Health, Department of Veterans Affairs, Centers for Disease Control and Prevention, Department of Defense, National Collegiate Athletic Association, National Football League, and Abbott Laboratories. He receives book royalties from Oxford University Press. He serves as clinical consultant to Milwaukee Bucks, Milwaukee Brewers, and Green Bay Packers, and is Co-Director of the NFL Neuropsychology Consultants without compensation. He serves as consultant for Neurotrauma Sciences. He receives travel support and speaker honorariums for professional activities. JP is an editor of BJSM for which he receives an honorarium. He is an unpaid consultant to the World Rugby Concussion Advisory Group for which he also serves as an Independent Concussion Advisor (fee per consultation). Other unpaid positions include being medical advisor to South African Rugby, Co-chair of the Scientific Committee, 6th International Conference on Concussion in Sport (travel and accommodation subsidised), Board member of the Concussion in Sport Group and a Scientific Advisory Board member of EyeGuideTM. ZP No COI to declare. LP CASEM Board Member, President-Elect 2022-2023NIH R34 Grant for EPICC Study (Eye Problems In Concussed Children), Site PISpeaker at various conferences. MP is a consultant and Chief Medical Officer of Major League Soccer, and serves as a Senior Advisor, for the National Football Leagues’ Head, Neck & Spine Committee. She serves as a member for the FA Research Task Force, the US Soccer Medical Advisory Committee and the NOCSAE Scientific Advisory Committee. She has served as a member of the UK Concussion Foundation Protocol Forum, as a consultant for the CDC Concussion work, as an expert panel member of the Concussion in Sport Group. She is part of the IOC Mental Health Working Group, and the USOPC Mental Health Advisory Committee. She serves as a Team Physician for US Soccer, has received funding for concussion research (NCAA-CARE-DoD 2.0, ended 2020), has received honoraria and reimbursement for travel for speaking and conferences, has written chapters for UpToDate, received royalties for the Netter’s Sports Medicine textbook and has provided work as an expert for cases involving concusports medicine topics. GMS is an owner of a multidisciplinary practice (managinsion, team physician and other sg patients with MSKpain disorders).He is a board member of Hockey Calgary (Calgary, AB, Canada) and Chair of the Alberta Association of Physiotherapy. He received funding for the administrative aspects of the writing of two of the systematic reviews that informed the consensus process. KJS has received grant funding from the Canadian Institutes of Health Research, National Football League Scientific Advisory Board, International Olympic Committee Medical and Scientific Research Fund, World Rugby, Mitacs Accelerate, University of Calgary) with funds paid to her institution and not to her personally. She is an Associate Editor of BJSM (unpaid) and has received travel and accommodation support for meetings where she has presented. She is coordinating the writing of the systematic reviews that will inform the 6th International Consensus on Concussion in Sport, for which she has received an educational grant to assist with the administrative costs associated with the writing of the reviews. She is a member of the AFL Concussion Scientific Committee (unpaid position) and Brain Canada (unpaid positions). She works as a physiotherapy consultant and treats athletes of all levels of sport from grass roots to professional. MT is employed full-time as the CEO and Medical Director of ICHIRF—a paid post he has held since April 2015. Hon Medical Adviser to the Professional Riders Insurance Scheme (PRIS)—discretionary honorarium Member of the Premier League Head Injury Advisory Group (HIAG)—no remuneration Director of ICHIRF Ireland—no remuneration Honorary Medical Adviser to the Concussion Foundation—no remuneration Member of the expert panel for the Dept of Digital, Culture, Media and Sport review into concussion in amateur sport—no remuneration Attendance at conferences or meetings as a guest speaker—reimbursement of travel expenses, complimentary registration and payment of hotel accommodation and meals by the organising committee No stocks or options in any concussion-related company No consultancies, board or editorial positions related to concussion. Jvl is the founder of R2P Concussion Management. NW is Chair, British Paralympic Association (voluntary) IPC Medical Committee Member (voluntary) Concussion in Para Sports (CIPS), founding member (voluntary) BJSM Editorial Board member (voluntary) Sports Horizon, Board of Directors—equity share—see KOY is Editor-in-Chief of the Journal Neuropsychology and receives an editorial stipend from the American Psychological Association. He is an unpaid consulting editor for the journals Archives of Clinical Neuropsychology and Journal of Head Trauma Rehabilitation. He is an unpaid member of the Scientific Advisory Committee for Brain Injury Canada. He is the chair of the Canadian Concussion Network, which is funded by a grant from Canadian Institutes of Health Research (CIHR) to his institution; he is the principal applicant on the grant but receives no income from it. He is a principal investigator on another grant from CIHR from which he derives no income. He is a co-investigator on research grants from CIHR, the US National Institutes of Health (NIH), Brain Canada Foundation, and National Football League Scientific Advisory Board; he derives income only from the grant from NIH. He serves as a member of a CIHR grant review panel for which he receives a small honorarium. He receives book royalties from Guilford Press and Cambridge University Press. He has received travel support and honorarium for presentations to multiple organisations. He has served or serves on the following committees/boards for which he receive(d) honorarium: 1. Independent Data Monitoring Committee (IDMC), Care for Post-Concussive Symptoms EffecCveness (CARE4PCS-2) Trial, National Institute for Child Health and Human Development. 2. Observational Study Monitoring Board (OSMB), Approaches and Decisions in Acute Pediatric TBI (ADAPT) Trial, National Institute of Neurological Disorders and Stroke National Research Advisory Council, National Pediatric Rehabilitation Resource Center, Center for Pediatric Rehabilitation: Growing Research, Education, and Sharing Science (C-PROGRESS), Virginia Tech University.

• Provenance and peer review Not commissioned; internally peer reviewed.

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