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AIMS The Center for Substance Abuse Treatment (CSAT) Methamphetamine Treatment Project (MTP) is the largest randomized clinical trial of treatments for methamphetamine (MA) dependence to date. The objective of the study was to compare the Matrix Model, a manualized treatment method, with treatment-as-usual (TAU) in eight community out-patient settings in(More)
The Clinical Trials Network (CTN) represents a major initiative intended to bridge the gap between research and practice in substance abuse treatment by implementing a range of studies evaluating behavioral, pharmacologic, and combined treatments in community-based drug abuse treatment programs across the country. This article describes the development of(More)
Despite recent emphasis on integrating empirically validated treatment into clinical practice, there are little data on whether manual-guided behavioral therapies can be implemented in standard clinical practice and whether incorporation of such techniques is associated with improved outcomes. The effectiveness of integrating motivational interviewing (MI)(More)
The effectiveness of motivational enhancement therapy (MET) in comparison with counseling as usual (CAU) for increasing retention and reducing substance use was evaluated in a multisite randomized clinical trial. Participants were 461 outpatients treated by 31 therapists within 1 of 5 outpatient substance abuse programs. There were no retention differences(More)
This study examined participant characteristics and treatment response among substance-abusing adolescents who received outpatient treatment (N=305, 70.2% adolescent male, 55.3% White, 33.1% Latino, average age of 16 years). Chart reviews were performed on existing intake and discharge assessments between 1999 and 2003 from two Matrix Institute on(More)
ACKNOWLEDGMENTS Numerous people contributed to this publication. The clinical supervision competencies were developed by a Task Force of experts (see page v), and the document was reviewed by others in the substance use disorder treatment field (see Appendix D). DISCLAIMER The opinions expressed herein are the views of Task Force members and do not(More)
The use of methamphetamine and cocaine have both produced significant public health problems during the past two decades. Although these powerful psychostimulants have many common acute and chronic effects, there are some important differences in who uses these drugs and the consequences of their use. This article reports on two large cohorts of(More)
Based upon a sample of 83 cocaine users self-selected into one of 3 programs, several conclusions seem possible. There seems to be little difference in Ss populations who choose hospital, outpatient or self-help/no treatment. Current hospital aftercare programs may not be appropriately oriented for cocaine users. It appears the hospital program in this(More)
The Matrix model of outpatient treatment was developed during the 1980s in response to an overwhelming demand for cocaine abuse treatment services. The model was constructed using components based upon empirically supported findings from the substance abuse research field. Over the course of development, data were collected on the treatment model and the(More)
Increasing numbers of methamphetamine users sought treatment during the decade of the 1990s. Little is known about the post treatment status of methamphetamine users who enter treatment. The data presented in this paper describe the outcome status of a group of a convenience sample of 114 methamphetamine users from a total group of 500 methamphetamine users(More)