A typology of St. Louis arrestees surveyed through the arrestee drug abuse monitoring (ADAM) program.

Past research has demonstrated that the characteristics of substance abusers vary considerably. Often, however, addicts are considered members of a single, homogeneous group. These erroneous designations may indeed prevent the successful rehabilitation of substance abusers. In the present study, hierarchical and K-means cluster analyses are used to identify a typology of substance users from a sample of 1,580 St. Louis arrestees surveyed through the Arrestee Drug Abuse Monitoring (ADAM) Program. Five clusters are yielded in the present analysis. The analyses illustrate not only that drug-using classifications differ between criminal and non-criminal populations, but that arrestee populations themselves vary interjurisdictionally. Given these findings, implications for local and regional drug treatment programs are assessed.