Summary
"Rates of and attitudes towards driving after the use of marijuana and/or alcohol were investigated among 793 Grade 9-12 high school students from rural and urban areas of Eastern Ontario (September 2006 - April 2007). Students were administered a self-report questionnaire on their past-year use of marijuana and alcohol, driving history, frequency of driving following the use of marijuana and/or alcohol, riding as a passenger with a driver under these same conditions, substance-related accident involvement, and attitudes towards substance-related driving. Differences in attitudes and driving behaviours were examined according to youths' frequency of marijuana and alcohol use, gender and type of driver's licence. The theory of planned behaviour was used to investigate how adolescents' attitudes towards substance use and driving influence their intentions to engage in this behaviour."--Page i.