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Attempts to Stop/Reduce Marijuana Among Dependent Users

This study has been completed.
Sponsor:
Collaborator:
Information provided by (Responsible Party):
John Hughes, University of Vermont
ClinicalTrials.gov Identifier:
NCT01039415
First received: December 24, 2009
Last updated: September 17, 2013
Last verified: September 2013

December 24, 2009
September 17, 2013
June 2010
October 2012   (final data collection date for primary outcome measure)
initiation of a quit or reduction attempt [ Time Frame: during 3 months of monitoring ] [ Designated as safety issue: No ]
Not Provided
Complete list of historical versions of study NCT01039415 on ClinicalTrials.gov Archive Site
duration of a quit attempt [ Time Frame: during the 3 months of monitoring ] [ Designated as safety issue: No ]
Not Provided
Not Provided
Not Provided
 
Attempts to Stop/Reduce Marijuana Among Dependent Users
Attempts to Stop/Reduce Marijuana Among Dependent Users

The purpose of the study is to determine why and how marijuana users stop or reduce their marijuana use.

The major aim of this study is to provide a better understanding of attempts to stop or reduce marijuana use that can be used to develop better behavioral treatments for marijuana dependence. The application will focus on adult daily marijuana users who try to stop or reduce their marijuana use in a real-world setting. Although prospective, natural history studies describing attempts to stop or reduce alcohol, heroin and tobacco use have proved useful, we know of no such study among adult marijuana users. Two pilot studies will develop measures and assess compliance with our procedures. The main study will recruit up to 400 adult marijuana smokers with the goal of a sample size of 200 participants with adequate compliance. Participants will call an Interactive Voice Recording (IVR) system daily for 3 months to report marijuana use, quit/reduction attempts, and events that might increase or decrease the probability of initiating a quit/reduction attempt or the success of an attempt. Follow-up at 6 months will track recent marijuana and other drug use. Knowing what motivates marijuana users to try to stop or reduce, and knowing which strategies for stopping marijuana use are successful, can help develop treatments for marijuana dependence. For example, if stopping tobacco when trying to stop marijuana decreases the chance of stopping marijuana, then smoking cessation should be done after stopping marijuana. Or if reducing marijuana often leads to cessation, then convincing those not interested in quitting marijuana to first try reducing may be helpful.

Observational
Observational Model: Case-Only
Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample

adults 18 and older

  • Marijuana Abuse
  • Marijuana Dependence
Not Provided
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
234
October 2012
October 2012   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • daily marijuana smokers for at least 1 year

Exclusion Criteria:

  • pregnant women
Both
18 Years and older
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT01039415
CHRBS #09-005, R01DA024691
No
John Hughes, University of Vermont
University of Vermont
National Institute on Drug Abuse (NIDA)
Principal Investigator: John Hughes, MD University of Vermont
University of Vermont
September 2013

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP