Cannabis use in older drivers in Colorado: The LongROAD Study.

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ID: 53322
2019
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Abstract
This study examined cannabis use and driving outcomes among older drivers in Colorado, which has legalized medical and recreational use. The associations of self-reported past-year cannabis use with diverse driving outcomes were assessed in 598 drivers aged 65-79 (51% female, 70% with postsecondary education), using regression analysis to adjust for health and sociodemographic characteristics. Two hundred forty four (40.8%) drivers reported ever using cannabis. Fifty-four drivers (9.0%) reported past-year use, ranging from more than once a day (13.0%) to less than once a month (50.0%). Of past-year users, 9.3% reported cannabis use within 1 h of driving in the past year. Past-year users were younger, less highly educated, lower income, and reported significantly worse mental, emotional, social and cognitive health status than drivers without past-year use. Past-year users were four times as likely to report having driven when they may have been over the legal blood-alcohol limit (adjusted OR [aOR] = 4.18; 95% CI: 2.11, 8.25) but were not more likely to report having had a crash or citation (aOR = 1.36; 95% CI: 0.70, 2.66) in the past year. Users and non-users had similar scores on self-rated abilities for safe driving (adjusted beta=-0.04; 95% CI: -0.23, 0.15) and on driving-related lapses, errors and violations in the past year (adjusted beta = 0.04; 95% CI: -0.04, 0.12). Further study is needed to establish driving risks and behaviours related to cannabis use, independent of other associated risk factors, among older adults.
Reference Key
diguiseppi2019cannabisaccident Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors DiGuiseppi, Carolyn G;Smith, Alexandra A;Betz, Marian E;Hill, Linda;Lum, Hillary D;Andrews, Howard;Leu, Cheng-Shiun;Hyde, Hailey A;Eby, David W;Li, Guohua;, ;
Journal accident; analysis and prevention
Year 2019
DOI
S0001-4575(19)31225-4
URL
Keywords
cannabis marijuana geriatric traffic safety driving older driver

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