The IDMU Regular Users IV
Survey involved a total sample of 2173 drug users
who completed anonymous questionnaires at pop festivals
and other UK events during 1999.
Respondents were questioned about their patterns of drug use, including
age of initiation to using a range of specified
legal and illegal drugs, and monthly spending and
subjective ratings of these drugs, amongst a variety
of other questions including political opinions,
drug prices, driving behaviour and health effects.