Data from the 1991-1994 Drug Abuse Treatment Outcome Study on cocaine usage patterns.
Usage
data("cocaine")
Arguments
Format
A data frame with 7592 observations on the following 2 variables.
sex
a factor with levels femalemale
mode
a factor recording self-reported method of cocaine ingestion with levels crackfreebaseinhaleinject
References
United States Department of Health and Human Services and National Institute of Health and National Institute on Drug Abuse (2010). Drug Abuse Treatment Outcome Study, 1991-1994. Ann Arbor, MI: Inter-university Consortium for Political and Social Research.