@article{ref1,
title="Self-reported driving after marijuana use in association with medical and  recreational marijuana policies",
journal="International journal on drug policy",
year="2020",
author="Benedetti, Marco H. and Li, Li and Neuroth, Lucas M. and Humphries, Kayleigh D. and Brooks-Russell, Ashley and Zhu, Motao",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="BACKGROUND: A common concern surrounding increasingly permissive marijuana policies  in the US is that they will lead to more dangerous behavior, including driving after  marijuana use. Although there is considerable research on the effects of marijuana  policies on behaviours, few studies have examined self-reported driving after  marijuana use. In this study, we use data from the Traffic Safety Culture Index  (TSCI) to model self-reported past-year driving after marijuana use in association  with medical and recreational marijuana policies. <br><br>METHODS: We analysed individual  responses to annual administrations of TSCI from years 2013-2017 using a multiple  logistic regression model. Our outcome variable was self-reported past-year driving  after marijuana use (at least once vs. never), and our primary explanatory variable  was the respondents' state medical marijuana (MM) and recreational marijuana (RM)  policy. Additional explanatory variables include policies that specify thresholds  for marijuana-intoxicated driving, year, and demographic factors. <br><br>RESULTS: Drivers  in states that legalized MM but not RM had marginally higher odds of self-reporting  driving after marijuana use compared to drivers in states where both RM and MM were  illegal (adjusted OR 1.29; 95% CI 0.98, 1.70; p = 0.075). However, we found little  evidence that drivers in states that legalized both RM and MM had higher odds of  driving after marijuana use compared to drivers in states where both RM and MM were  illegal (adjusted OR 1.06; 95% CI 0.71, 1.56; p = 0.784). Per-se or THC threshold  laws were associated with lower self-reported driving after marijuana use (adjusted  OR 0.74; 95% CI 0.57, 0.95; p = 0.018). <br><br>CONCLUSION: Although we found some evidence  of an association between MM legalization and self-reported driving after marijuana  use, our results provide only mixed support for the hypothesis that permissive  marijuana policies are associated with higher odds of self-reported driving after  marijuana use.  Keywords: Cannabis impaired driving <p /> <p>Language: en</p>",
language="en",
issn="0955-3959",
doi="10.1016/j.drugpo.2020.102944",
url="http://dx.doi.org/10.1016/j.drugpo.2020.102944"
}