NCT01039415

Brief Summary

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

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
234

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jun 2010

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 24, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

December 25, 2009

Completed
5 months until next milestone

Study Start

First participant enrolled

June 1, 2010

Completed
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2012

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2012

Completed
Last Updated

October 31, 2016

Status Verified

October 1, 2016

Enrollment Period

2.3 years

First QC Date

December 24, 2009

Last Update Submit

October 27, 2016

Conditions

Marijuana AbuseMarijuana Dependence

Keywords

marijuanamarijuana abusemarijuana dependencecannabissubstance-related disorderabstinence

Outcome Measures

Primary Outcomes (1)

  • initiation of a quit or reduction attempt

    during 3 months of monitoring

Secondary Outcomes (1)

  • duration of a quit attempt

    during the 3 months of monitoring

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

adults 18 and older

You may qualify if:

  • daily marijuana smokers for at least 1 year

You may not qualify if:

  • pregnant women

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Vermont

Burlington, Vermont, 05401, United States

Location

Related Publications (3)

  • Hughes JR, Fingar JR, Budney AJ, Naud S, Helzer JE, Callas PW. Marijuana use and intoxication among daily users: an intensive longitudinal study. Addict Behav. 2014 Oct;39(10):1464-70. doi: 10.1016/j.addbeh.2014.05.024. Epub 2014 Jun 4.

    PMID: 24935797RESULT

  • Hughes JR, Naud S, Budney AJ, Fingar JR, Callas PW. Attempts to stop or reduce daily cannabis use: An intensive natural history study. Psychol Addict Behav. 2016 May;30(3):389-97. doi: 10.1037/adb0000155. Epub 2016 Feb 1.

    PMID: 26828641RESULT

  • Hughes JR, Naud S, Budney AJ, Fingar JR, Callas PW. Environmental cues and attempts to change in daily cannabis users: An intensive longitudinal study. Drug Alcohol Depend. 2016 Apr 1;161:15-20. doi: 10.1016/j.drugalcdep.2015.09.033. Epub 2016 Feb 6.

    PMID: 26872879RESULT

MeSH Terms

Conditions

Marijuana AbuseSubstance-Related Disorders

Condition Hierarchy (Ancestors)

Chemically-Induced DisordersMental Disorders

Study Officials

  • John Hughes, MD

    University of Vermont

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of psychiatry

Study Record Dates

First Submitted

December 24, 2009

First Posted

December 25, 2009

Study Start

June 1, 2010

Primary Completion

October 1, 2012

Study Completion

October 1, 2012

Last Updated

October 31, 2016

Record last verified: 2016-10

Locations

US(1)