This report of the 2004 National Drug Strategy Household Survey, Detailed Findings, describes the use of licit and illicit drugs and the perceptions and attitudes associated with them. Throughout this report the focus and results reported are—as they were for earlier surveys— on Australians aged 14 years and older. The main exception to this is the chapter on youth, which gives additional details for 12–13-year-olds, who were first included in the survey in 2004. In this Summary the results given are for Australians aged 14 years and older, unless indicated otherwise.