This report looks at trends and patterns of drug use among young people in Northern Ireland, including figures on self-reported drug use and tables of bivariate relationships between responses to questions in the surveys. An appendix provides information for the four health and social services boards. This report follows on from the initial results presented in the 'Young Persons' Behaviour' and 'Attitudes Survey Bulletin October 2000 - November 2000' and presents both descriptive and multivariate analyses of the two surveys.