Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
311 participants
INTERVENTIONAL
2019-02-14
2020-11-30
Brief Summary
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Detailed Description
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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.
Conditions
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Keywords
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
SINGLE
Study Groups
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Control (volitional help sheet)
Participants read a brief statement designed to encourage them to reduce their cannabis use ("We want you to plan to reduce your cannabis use"). Participants are presented with a table with two columns and twenty rows. Twenty 'high risk' situations (temptations) are presented in the left hand column and 20 appropriate responses (processes of change) are presented in the right hand column (see Armitage, 2008). Participants are told that identifying situations in which they were tempted to use cannabis and identifying ways to overcome those temptations had been shown to help people change their behaviour and are asked to tick critical situations/appropriate responses that might be useful to them.
Volitional help sheet
Participants are asked to choose from a list of strategies for avoiding cannabis use.
Intervention (volitional help sheet)
Participants read a brief statement designed to encourage them to reduce their cannabis use ("We want you to plan to reduce your cannabis use"). Participants are presented with a table with two columns and twenty rows. Twenty 'high risk' situations (temptations) are presented in the left hand column and 20 appropriate responses (processes of change) are presented in the right hand column (see Armitage, 2008). Participants are told that identifying situations in which they were tempted to use cannabis and identifying ways to overcome those temptations had been shown to help people change their behaviour. Implementation intentions are formed by linking critical situations with appropriate responses by choosing an appropriate response from a drop down menu for each critical situation.
Volitional help sheet
Participants are asked to choose from a list of strategies for avoiding cannabis use.
Interventions
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Volitional help sheet
Participants are asked to choose from a list of strategies for avoiding cannabis use.
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* Infrequent / no cannabis use (less than fortnightly)
18 Years
ALL
Yes
Sponsors
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University of Manchester
OTHER
Responsible Party
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Lynsey Gregg
Principal Investigator
Principal Investigators
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Lynsey Gregg, PhD
Role: PRINCIPAL_INVESTIGATOR
The University of Manchester
Locations
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The University of Manchester
Manchester, , United Kingdom
Countries
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References
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Sniehotta FF, Nagy G, Scholz U, Schwarzer R. The role of action control in implementing intentions during the first weeks of behaviour change. Br J Soc Psychol. 2006 Mar;45(Pt 1):87-106. doi: 10.1348/014466605X62460.
Gardner B, Abraham C, Lally P, de Bruijn GJ. Towards parsimony in habit measurement: testing the convergent and predictive validity of an automaticity subscale of the Self-Report Habit Index. Int J Behav Nutr Phys Act. 2012 Aug 30;9:102. doi: 10.1186/1479-5868-9-102.
West R, Hajek P. Evaluation of the mood and physical symptoms scale (MPSS) to assess cigarette withdrawal. Psychopharmacology (Berl). 2004 Dec;177(1-2):195-9. doi: 10.1007/s00213-004-1923-6. Epub 2004 Jun 4.
Other Identifiers
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2018 5701
Identifier Type: -
Identifier Source: org_study_id