The 2001 National Household Survey on Drug Abuse asked youths 12 to 17 to report on their involvement in violent behavior during the year before the survey, including serious fighting at school or work, group-against-group fighting, or attacking others with the intent of seriously hurting them. Youths also were asked about their use of alcohol and illicit drugs during the previous month. Among youths aged 12 to 17, males were more likely than females to report violent behaviors during the previous year. Youths aged 14 or 15 reported higher rates of serious fighting at school or work and group-against-group fighting than youths aged 12 or 13 or those aged 16 or 17. Youths aged 12 to 17 who reported violent behaviors in the preceding year reported higher rates of past year illicit drug or alcohol use compared with youths who did not report violent behaviors. Figures, notes