Details:

Alternative Title:
Inj Epidemiol
Personal Author:
Chihuri, Stanford ; Li, Guohua ; Chen, Qixuan
Chihuri, Stanford ; Li, Guohua ; Chen, Qixuan Less -
Description:
Background

Concurrent use of marijuana and alcohol in drivers is of increasing concern but its role in crash causation has not been well understood.

Methods

Using a case–control design, we assessed the individual and joint effects of marijuana and alcohol use on fatal crash risk. Cases (n = 1944) were drivers fatally injured in motor vehicle crashes in the United States at specific times in 2006, 2007 and 2008. Controls (n = 7719) were drivers who participated in the 2007 National Roadside Survey of Alcohol and Drug Use by Drivers.

Results

Overall, cases were significantly more likely than controls to test positive for marijuana (12.2% vs. 5.9%, p < 0.0001), alcohol (57.8% vs. 7.7%, p < 0.0001) and both marijuana and alcohol (8.9% vs. 0.8%, p < 0.0001). Compared to drivers testing negative for alcohol and marijuana, the adjusted odds ratios of fatal crash involvement were 16.33 [95% confidence interval (CI): 14.23, 18.75] for those testing positive for alcohol and negative for marijuana, 1.54 (95% CI: 1.16, 2.03) for those testing positive for marijuana and negative for alcohol, and 25.09 (95% CI: 17.97, 35.03) for those testing positive for both alcohol and marijuana.

Conclusions

Alcohol use and marijuana use are each associated with significantly increased risks of fatal crash involvement. When alcohol and marijuana are used together, there exists a positive synergistic effect on fatal crash risk on the additive scale.


Subjects:
[+]
Accidents Alcohol Case–control Studies Drug Interaction Marijuana Motor Vehicles Original Contribution Safety Traffic
Source:
Inj Epidemiol. 4.
Pubmed ID:
28286930
Pubmed Central ID:
PMC5357617
Document Type:
Journal Article
Funding:
R49 CE002096/CE/NCIPC CDC HHS/United States
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:f9f4c27c36f774073de750f467334c2e75321e3fa0d3712adc4f2fc7343a0e30
Download URL:
https://stacks.cdc.gov/view/cdc/46224/cdc_46224_DS1.pdf
File Type:

Supporting Files

• 	40621_2017_105_Article_Equa.gif	gif
  	40621_2017_105_Article_Equb.gif	gif
  	40621_2017_105_Article_Equc.gif	gif
  	40621_2017_105_Article_Equd.gif	gif
  	40621_2017_Article_105.nxml	xml

More +