The injury mechanisms (external causes of injury) associated with TBI-related deaths vary by age group.  TBI-related deaths in children 0–4 years are primarily associated with assault (42.9%) and motor vehicle traffic-related crashes (29.2%).  Motor vehicle traffic crashes account for a majority of TBI-related deaths (55.8%) in youth 5–14 years and almost half (47.4%) in young adults 15–24 years.  Falls account for the majority (54.4%) of TBI-related deaths in adults 65 years of age and older.

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