Abstract

BackgroundTraumatic brain injuries (TBI) are the leading cause of death for people aged <40 years. In Canada, the structure of trauma care has evolved independently across provinces during the last decade. However, little is known about the evolution of clinical outcomes. We aimed to compare trends in hospital mortality, unplanned readmission, hospital length of stay (LOS) and intensive care unit (ICU) LOS for TBI between 2006 and 2012 across Canadian provinces. MethodsWe conducted a retrospective multicentre cohort study based on TBI admissions across Canadian level I and II trauma centres. Data were extracted from the National Trauma Registry linked to hospital discharge databases. All adults with an injury severity score ≥12 were included. Multilevel generalized linear models were used to evaluate trends in clinical outcomes. ResultsBetween 2006 and 2012, we observed a decrease in mortality in Canada (odd ratio [OR] = 0.95; 95% confidence intervals [CI] = 0.92–0.98) mostly driven by Ontario (OR = 0.95; 95% CI = 0.93–0.98). We observed a significant decrease in hospital length of stay in Canada (hazard ratio [HR]: hazard of being discharged alive from hospital = 1.02; 95% CI = 1.01–1.02) mostly driven by a decrease in Quebec (HR = 1.03; 95% CI = 1.01–1.04). We observed a decrease in ICU Length of stay only in Alberta (HR = 1.05; 95% CI = 1.01–1.09). No trend was observed for hospital readmissions. ConclusionWe observed significant decreases in mortality, hospital and ICU length of stay for TBI in Canada between 2006 and 2012 but only in certain provinces. This study may represent the first step towards a better understanding of the influence of trauma system configuration on the burden of injuries in Canada.

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