Using Implementation Intentions to Reduce Cannabis Use

Status Completed

Clinical Trial Summary

The study will recruit frequent users of cannabis (defined at least fortnightly use) and randomize them either to: (1) form implementation intentions by linking situations in which they are tempted to use cannabis with strategies to avoid using cannabis in those situations by using a volitional help sheet, or (2) to consider the situations in which they are tempted to use cannabis alongside possible strategies to avoid using it as presented in the volitional help sheet but not to form implementation intentions. The effects on self-reported cannabis use will be assessed 1 month post-intervention. Predictors of cannabis reduction will also be examined.

Clinical Trial Description

Design: This study will use questionnaires to assess participants cannabis habits (frequency and amount of use) and then employ planning strategies to help them quit. Follow up questionnaires will be used to ascertain the success of planning on reduction in cannabis use. Sample Size: We plan to recruit a minimum of 60 participants in each condition (120 total) but aim to collect data from as many participants as possible. Recruitment: To participate in this study a person must be over the age of 18 and a frequent user of cannabis. The study will be advertised online on social media platforms. Procedure: Potential participants will follow an online link to a briefing sheet that provides information about the study. The sheet will also inform participants that they do not have to complete the questionnaire and that they can withdraw from the study at any time without giving a reason. Once they have read the briefing sheet and generated their personal identity code, as instructed, they will complete the questionnaire online. A month after the participants have completed the initial questionnaire they will receive a link to a follow-up questionnaire via email. Email addresses will be stored separately to study data and will be destroyed once the follow up phase has completed and their involvement in the study ends. Outcomes and Analysis: The main purpose of this study is to explore the role of planning in encouraging people to reduce cannabis use. Quantitative analysis will be conducted to assess the effects of planning on cannabis use reduction. The investigators expect to find that planning is effective in helping people reduce their use. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03845842
Study type	Interventional
Source	University of Manchester
Contact
Status	Completed
Phase	N/A
Start date	February 14, 2019
Completion date	November 30, 2020

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT03253926` - Effect of Lorcaserin on Cannabis Withdrawal and Self-administration	Phase 1/Phase 2
Completed	`NCT04060602` - Personalized Feedback Intervention to Reduce Risky Cannabis Use.	N/A
Completed	`NCT01212081` - Assessment of Cannabis Craving in Schizophrenia Using Virtual Reality
Recruiting	`NCT04988490` - Quantification of Cannabinoids and Comparison to Post-Surgical Pain Medication Requirements and Surgical Outcomes
Recruiting	`NCT05188404` - Aging and Marijuana: Benefits, Effects, and Risks
Completed	`NCT03662737` - VRT as a Biomarker of Cerebellar Dysfunction in Chronic Cannabis Use
Not yet recruiting	`NCT05999383` - Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration	Phase 2
Terminated	`NCT04436055` - Intergenerational Effects of Paternal Periconceptional Cannabis and Other Drug Use (EPIC)
Active, not recruiting	`NCT04374773` - Effects of Pregnancy-associated Hormones on THC Metabolism in Women	Phase 4
Completed	`NCT04316741` - Brief Intervention Combined With Health Coaching Via Social Media for Cannabis Use	N/A
Recruiting	`NCT05396638` - Characterization of Endocannabinoid and Endogenous Opioid Levels in Adolescents With Cannabis Use Disorder	N/A
Recruiting	`NCT05309226` - Cannabis Use in Pregnancy and Downstream Effects on Maternal and Infant Health
Recruiting	`NCT03859089` - Cannabis for Opioid Substitution Trial
Recruiting	`NCT05849636` - Alerta Cannabis: Evaluation of Web-based Tailored Intervention	N/A
Enrolling by invitation	`NCT05521321` - Feasibility and Acceptability of the Cannabis Awareness and Prevention Toolkit	N/A
Recruiting	`NCT05119244` - Environment and Lung Cancer	N/A
Recruiting	`NCT04841655` - Tobacco Cessation Among Smokers Under Alcohol and/or Cannabis Treatment
Terminated	`NCT04100590` - Eye Tracking as a Biomarker of Cannabis Effects	Phase 2
Completed	`NCT05167097` - Mindsets and the Effectiveness of a Brief Intervention - Replication	N/A
Recruiting	`NCT04114903` - Exploring the Anti-inflammatory Properties of Cannabis and Their Relevance to Insulin Sensitivity

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.