Differences in Background and Drug Use History among Three Types of Drug Users Entering Drug Therapy Programs

Abstract
The 26,316 patients who entered drug therapy programs participating in the DARP from June, 1971, to March, 1973, and who had used drugs for at least two years were grouped into three drug use categories: daily users of opioids, less-than-daily users of opioids, and non-users of opioids. Differences were observed among these three groups regarding the first drug used daily and the age at first drug use. A multiple discriminant analysis including demographic, drug history, and personal background variables indicated that the major differences among these types of drug users revolved around ethnic and age-related variables.

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