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A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion
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Prior Concussions and Risk of Disability for Patients After a Motor Vehicle Crash.

Donald A Redelmeier1,2,3,4,5, Vidhi Bhatt1,2,3, Samantha S M Drover2

  • 1Evaluative Clinical Sciences Program, Sunnybrook Research Institute, Toronto, Ontario.

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A prior concussion significantly increases the risk of long-term disability following a motor vehicle crash. This finding highlights the need for enhanced concussion prevention and traffic safety measures.

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Area of Science:

  • Neuroscience and Public Health
  • Trauma and Injury Research

Background:

  • Motor vehicle crashes (MVCs) can lead to slow, frustrating, and incomplete recovery, often with persistent neurocognitive deficits.
  • The impact of prior concussions on long-term outcomes after MVCs remains an important area for investigation.

Purpose of the Study:

  • To determine if a history of concussion is associated with an elevated risk of long-term disability after surviving a motor vehicle crash.
  • To quantify the association between prior concussion and subsequent long-term disability.

Main Methods:

  • A population-based cohort study was conducted using data from adults surviving MVCs in Ontario, Canada, between April 2003 and March 2023.
  • Long-term disability was identified through official social service records, comparing individuals with and without a history of prior concussion.

Main Results:

  • The study included 907,984 patients, with 19,851 having a prior concussion.
  • Patients with a prior concussion demonstrated a 15% higher adjusted risk of long-term disability (95% CI, 9%-21%; P < .001) compared to those without.
  • This increased risk was consistent across various crash severities and patient groups, including passengers and pedestrians.

Conclusions:

  • A prior concussion is a significant risk factor for developing long-term disability after a motor vehicle crash.
  • Findings underscore the importance of concussion prevention strategies and targeted traffic safety counseling for individuals with a history of concussion.