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Population density and mortality among individuals in motor vehicle crashes
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Forensic Medicine.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Clinical pharmacogenetics and osteoporosis)
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2010 (English)In: Injury Prevention, ISSN 1353-8047, E-ISSN 1475-5785, Vol. 16, no 5, 302-308 p.Article in journal (Refereed) Published
Abstract [en]

Objective

To assess whether higher mortality rates among individuals in motor vehicle crashes in areas with low population density depend on injury type and severity or are related to the performance of emergency medical services (EMS).

Methods

Prehospital and hospital deaths were studied in a population-based cohort of 41 243 motor vehicle crashes that occurred in Sweden between 1998 and 2004. The final multivariable analysis was restricted to 6884 individuals in motor vehicle crashes, to minimise the effects of confounding factors.

Results

Crude mortality rates following motor vehicle crashes were inversely related to regional population density. In regions with low population density, the unadjusted rate ratio for prehospital death was 2.2 (95% CI 1.9 to 2.5) and for hospital death 1.5 (95% CI 1.1 to 1.9), compared with a high-density population. However, after controlling for regional differences in age, gender and the type/severity of injuries among 6884 individuals in motor vehicle crashes, low population density was no longer associated with increased mortality. At 25 years of age, predicted prehospital mortality was 9% lower (95% CI 5% to 12%) in regions with low population density compared with high population density. This difference decreased with increasing age, but was still 3% lower (95% CI 0.5% to 5%) at 65 years of age.

Conclusions

The inverse relationship between population density and mortality among individuals in motor vehicle crashes is related to pre-crash factors that influence the type and severity of injuries and not to differences in EMS.

Place, publisher, year, edition, pages
2010. Vol. 16, no 5, 302-308 p.
National Category
Medical and Health Sciences Surgery
Research subject
Orthopaedics
Identifiers
URN: urn:nbn:se:uu:diva-134536DOI: 10.1136/ip.2009.024414ISI: 000282520000006OAI: oai:DiVA.org:uu-134536DiVA: diva2:373168
Available from: 2010-11-30 Created: 2010-11-29 Last updated: 2016-11-22

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Gedeborg, RolfThiblin, IngemarByberg, LiisaMelhus, HåkanMichaëlsson, Karl

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Anaesthesiology and Intensive CareUCR-Uppsala Clinical Research CenterForensic MedicineOrthopaedicsDepartment of Medical Sciences
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Injury Prevention
Medical and Health SciencesSurgery

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