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Journal Article

Citation

Goldstein GP, Clark DE, Travis LL, Haskins AE. Inj. Prev. 2011; 17(2): 84-90.

Affiliation

Center for Outcomes Research and Evaluation, Maine Medical Center, Portland, Maine, USA.

Copyright

(Copyright © 2011, BMJ Publishing Group)

DOI

10.1136/ip.2010.029249

PMID

21212443

Abstract

Background In the USA, the mortality rate from traffic injury is higher in rural and in southern regions, for reasons that are not well understood. Methods For 1754 (56%) of the 3142 US counties, we obtained data allowing for separation of the deaths/population rate into deaths/injury, injuries/crash, crashes/exposure and exposure/population, with exposure measured as vehicle miles travelled. A 'decomposition method' proposed by Li and Baker was extended to study how the contributions of these components were affected by three measures of rural location, as well as southern location. Results The method of Li and Baker extended without difficulty to include non-binary effects and multiple exposures. Deaths/injury was by far the most important determinant in the county-to-county variation in deaths/population, and accounted for the greatest portion of the rural/urban disparity. After controlling for the rural effect, injuries/crash accounted for most of the southern/northern disparity. Conclusions The increased mortality rate from traffic injury in rural areas can be attributed to the increased probability of death given that a person has been injured, possibly due to challenges faced by emergency medical response systems. In southern areas, there is an increased probability of injury given that a person has crashed, possibly due to differences in vehicle, road, or driving conditions.


Language: en

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