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Abstract
The evaluation research on the effectiveness of treatments for drug abuse, which is the subject of several papers in this journal issue, is a multi-faceted program of data base management and substantive research involving the Drug Abuse Reporting Program (DARP). The DARP was established in 1969 by the National Institute of Mental Health (NIMH) at the Institute of Behavioral Research (IBR), Texas Christian University, to provide a data base for research on the evaluation of treatments for drug abuse. One major set of research reports, completed in 1973, has already been published [1] and is related to outcomes during treatment of a cohort of 11,385 patients admitted to treatment at 23 Federally supported treatment agencies during June 1969 to June 1971. This and the following papers focus mainly on the second wave of studies, completed in 1974. They involve a cohort of 15,831 patients admitted to 36 agencies during June 1971 to June 1972. The present report is designed to develop a context for the following papers by explaining the DARP research program and the data system on which it is based.