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  • Title: Exploring substance use and impaired driving among adults aged 21 years and older in the United States, 2015.
    Author: Jewett A, Peterson AB, Sauber-Schatz EK.
    Journal: Traffic Inj Prev; 2018; 19(7):693-700. PubMed ID: 29927680.
    Abstract:
    INTRODUCTION: Alcohol- or drug-impaired driving can cause motor vehicle crashes, injuries, and death. Estimates of drug-impaired driving are difficult to obtain. This study explores self-reported prevalence of and factors associated with alcohol, marijuana, and prescription opioid use and impaired driving among adults aged 21 years and older in the United States. METHODS: Self-reported data from 3,383 adults in the 2015 Fall ConsumerStyles survey were analyzed. Respondents were asked about alcohol, marijuana, and prescription opioid use and driving while impaired in the last 30 days. Weighted prevalence estimates were calculated. Prevalence ratios and Poisson log-linear regressions were used to identify factors associated with substance use and impaired driving. RESULTS: Alcohol use was reported by 49.5% (n = 1,676) of respondents; of these, 4.9% (n = 82) reported alcohol-impaired driving. Marijuana use was reported by 5.5% (n = 187) of respondents; of these, 31.6% (n = 59) reported marijuana-impaired driving. Prescription opioid use was reported by 8.8% (n = 298) of respondents; of these, 3.4% (n = 10) reported prescription opioid-impaired driving. Polysubstance use of alcohol and marijuana (concurrent use) was reported by 2.7% (n = 93) of respondents. Among those, 10.8% (n = 10) reported driving impaired by both alcohol and marijuana. CONCLUSIONS: Impaired driving was self-reported among alcohol, marijuana, and prescription opioid users. This article demonstrates the need for more robust alcohol- and drug-related data collection, reporting, and analyses, as well as the emerging need for surveillance of marijuana and prescription opioid-impaired driving. States can consider using proven strategies to prevent impaired driving and evaluate promising practices.
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