 In Grade 8, the prevalence of alcohol use in the past month, binge drinking (five or more drinks in a row) in the past two weeks, and the variety of delinquent behaviors committed in the past year were all significantly lower in CTC panel youth compared to control community panel youth.The CYDS also found significant effects of CTC in reducing the prevalence of cigarette use in the past month and delinquent behavior and violence in the past year in the spring of Grade 10.