• L A Gaudet, L Eliyahu, J Beach, M Mrazik, G Cummings, D C Voaklander, and B H Rowe.
• Department of Emergency Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada.
• Occup Med (Lond). 2019 Oct 1; 69 (6): 419-427.

BackgroundThe emergency department (ED) is the first point of care for many patients with concussion, and post-concussion syndrome can impact vocational outcomes like successful return to work. Evaluation of concussion in general adult populations is needed.AimsTo document the occurrence and outcomes of work-related concussion presenting to the ED for treatment.MethodsThis study enrolled adults presenting with concussion to three urban Canadian EDs. Baseline ED interviews, physician questionnaires and patient phone interviews at 30 and 90 days documented work-related events, ED management, discharge advice, patient adherence and symptom severity. Work-related injury and return to work were modelled using logistic or linear regression, as appropriate.ResultsOverall, 172 enrolled workers completed at least one follow-up. Work-related concussions were uncommon (n = 28). Most employees (80%) missed at least 1 day of work (median = 7; interquartile range: 3-14). Most (91%) employees returned to work within 90 days, while 41% reported persistent symptoms. Manual labour and self-reported history of attention deficit hyperactivity disorder were associated with work-related concussion, while days of missed work increased with marital status (divorced), history of sleep disorder and physician's advice to avoid work.ConclusionWork-related concussions are infrequent; however, most workers who sustain a concussion will miss work, and many return while still experiencing symptoms. Work-related concussion and days of missed work are mainly affected by non-modifiable factors. Workers, employers and the workers' compensation system should take necessary precautions to ensure that workers return to work safely and successfully following a concussion.© The Author(s) 2019. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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