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Motor Vehicle Occupant Fatality Risk Based on Person-Time Exposed: Age, Sex, and Period of Week
  • Published Date:
    2015-06-01
  • Language:
    English
Filetype[PDF-870.72 KB]


Details:
  • Resource Type:
  • Geographical Coverage:
  • TRIS Online Accession Number:
    01570621
  • Edition:
    Technical Report
  • Format:
  • Abstract:
    During the 5 years from 2008 through 2012, motor vehicle crashes killed 34,091 people each year in the United States, on average, 23,783 (69.8) percent of whom were motor vehicle occupants. This study analyzes motor vehicle occupant fatality risk in terms of person-time exposed as a function of age, sex, period of week, and interactions of these factors. Results reveal strong circadian periodicities of occupant fatalities and fatality risk, with greater risk during late evening-early morning hours every day of the week and the greatest risk during Friday–Saturday and Saturday–Sunday evening-to-morning hours. But these circadian trends interact with age and sex whereby young male occupants exhibit the most fatalities and risk. The circadian variation in occupant fatality risk-across demographic age-sex populations, days of the week, and drunk- and non-drunk-driver-related fatal crashes - suggests a drowsiness component acting alone, and sometimes synergistically with alcohol, to impair the judgment and performance of motor vehicle occupants.

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