Mechanisms and products implicated in mild traumatic brain injury among children aged 0–5 years old presenting to Canadian emergency departments

BACKGROUND/AIMS: Mild traumatic brain injury (mTBI) in young children is a growing public health concern. This study aimed to document the epidemiology of injury circumstances, mechanisms and products implicated in unintentional mTBI among children aged 0-5 years presenting to Canadian emergency departments. METHODS: A retrospective observational study was conducted using data from the Canadian Hospitals Injury Reporting and Prevention Program (CHIRPP) for all children aged 0-5 years old who experienced mTBI from 2012 to 2022. RESULTS: A total of 79 345 unintentional mTBI cases were recorded in CHIRPP across the study period. The most frequent mechanisms of injury were falls (n=67 599, 85.2%), being struck by/against an object (n=10 240, 12.9%) and transport-related injuries (n=1478, 1.9%). The prevalence of falls was 21% higher in infants (