Abstract
To test the hypotheses that average volume of alcohol consumption and patterns of drinking, each influence alcohol-related problems and that both act at individual and aggregate levels. The 2003 cycle of the Ontario Student Drug Use Survey obtained self-administered questionnaires from a representative classroom-based survey of 2455 Ontario secondary school students (grades 9-12) from 74 schools, with a student completion rate of 72%. Average volume of alcohol consumption was assessed using a quantity-frequency measure. Heavy drinking occasions were operationalized by four dummy variables indicating less than monthly, monthly, weekly and daily consumption of five or more drinks per occasion, with never having a heavy drinking occasion serving as the reference group. Alcohol-related problems were measured by using seven items of the Alcohol Use Disorders Identification Test. As hypothesized, both the average volume of alcohol consumption and patterns of drinking influenced alcohol-related problems at the student level, independently of each other. At the school level, both determinants significantly influenced the problems, but not when simultaneously entered into the equation. Future prevention of alcohol-related problems in adolescents should consider both the average volume and patterns of drinking. Both prevention and research should also try to include environmental determination of alcohol-related problems.
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