| Using the U.S. National Household Travel Survey to estimate the impact of passenger characteristics on young drivers' relative risk of fatal crash involvement. | |
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MedLine Citation:
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PMID: 20159095 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Motor vehicle crashes are the main cause of morbidity and mortality in teenagers and young adults in the United States. Driving exposure and passenger presence, which can both vary by driver and passenger characteristics, are known to influence crash risk. Some studies have accounted for driving exposure in calculating young driver fatal crash risk in the presence of passengers, but none have estimated crash risk by driver sex and passenger age and sex. One possible reason for this gap is that data collection on driving exposure often precludes appropriate analyses. The purpose of this study was to examine, per 10 million vehicle trips (VT) and vehicle-miles traveled (VMT), the relative risk of fatal crash involvement in 15-20-year-old male and female drivers as a function of their passenger's age and sex, using solo driving as the referent. The Fatality Analysis Reporting System provided fatal motor vehicle crash data from 1999 to 2003 and the 2001 National Household Travel Survey (NHTS) provided VT and VMT. The NHTS collects driving exposure for both household and non-household members (e.g., friends, colleagues), but demographic characteristics only on household members. Missing age and sex of non-household passengers were imputed with hot deck using information from household passengers' trips with non-household drivers, thereby enabling the calculation of crash rate and relative risk estimates based upon driver and passenger characteristics. Using this approach, the highest risk was found for young male drivers with 16-20-year-old passengers (relative risk [RR] per 10 million VT=7.99; 95% confidence interval [CI], 7.34-8.69; RR per 10 million VMT=9.94; 95% CI, 9.13-10.81). Relative risk was also high for 21-34-year-old passengers, again particularly when both drivers and passengers were male. These effects warrant further investigation and underscore the importance of considering driving exposure by passenger characteristics in understanding crash risk. Additionally, as all imputation techniques are imperfect, a more accurate estimation of U.S. fatal crash risk per distance driven would require national surveys to collect data on non-household passenger characteristics. |
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Authors:
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Marie Claude Ouimet; Bruce G Simons-Morton; Paul L Zador; Neil D Lerner; Mark Freedman; Glen D Duncan; Jing Wang |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, N.I.H., Intramural Date: 2009-11-28 |
Journal Detail:
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Title: Accident; analysis and prevention Volume: 42 ISSN: 1879-2057 ISO Abbreviation: Accid Anal Prev Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-17 Completed Date: 2010-06-07 Revised Date: 2011-07-25 |
Medline Journal Info:
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Nlm Unique ID: 1254476 Medline TA: Accid Anal Prev Country: England |
Other Details:
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Languages: eng Pagination: 689-94 Citation Subset: IM |
Copyright Information:
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Copyright 2009 Elsevier Ltd. All rights reserved. |
Affiliation:
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Prevention Research Branch, Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA. Marie.Claude.Ouimet@USherbrooke.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Accidents, Traffic
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mortality*,
statistics & numerical data Adolescent Adult Age Factors Data Collection Databases, Factual Female Humans Male Risk Sex Factors United States Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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263-HD-510791/HD/NICHD NIH HHS; ZIA HD001707-11/HD/NICHD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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