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Published on: February 16, 2011
Trends in hospitalization associated with traumatic brain injury in a publicly insured population, 1992-2002
Angela Colantonio1, Ruth Croxford, Samina Farooq
1Department of Occupational Science and Occupational Therapy, Toronto Rehabilitation Institute, University of Toronto, Toronto, Ontario, Canada. angela.colantonio@utoronto.ca
Background:
Traumatic brain injury (TBI) is a leading cause of death and disability in developed countries. We document trends in TBI-related hospitalizations in Ontario, Canada, between April 1992 and March 2002, focusing on relationships between inpatient hospitalization rates, age, sex, cause of injury, severity level, and in-hospital mortality.
Methods:
Information on all acute hospital separations in Ontario with a diagnosis of TBI was analyzed using logistic regression.
Results:
Hospitalization rates fell steeply among children and young adults but remained stable among adults aged 66 and older. The proportion of TBI hospitalizations with mild injuries decreased from 75% to 54%, whereas the proportion with moderate injuries increased from 19% to 37%. Adjusting for other risk factors, in-hospital deaths were higher for injuries because of motor vehicle crashes than those because of falls. In-hospital death rates were stable for patients with moderate or severe injuries, but increased over time among those whose injuries were classified as mild, suggesting a trend toward more serious injury within the "mild" classification.
Conclusions:
Hospitalizations for TBI involve fewer mild injuries over time and are highest in the oldest segment of the population.
