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Marijuana use and intoxication among daily users: an intensive longitudinal study.
John R Hughes1, James R Fingar2, Alan J Budney3
1Department of Psychiatry, University of Vermont, Burlington, VT 05405, United States; Department of Psychology, University of Vermont, Burlington, VT 05405, United States; Department of Family Practice, University of Vermont, Burlington, VT 05405, United States.
Addictive Behaviors
|June 18, 2014
Summary
Daily marijuana users consume cannabis multiple times daily, often using various methods and experiencing significant intoxication. Social factors strongly influence usage frequency, highlighting a need for better research descriptions.
Area of Science:
- Addiction research
- Cannabis studies
- Public health
Background:
- Daily marijuana use poses significant harm, yet lacks detailed prospective research.
- Understanding patterns of daily cannabis consumption is crucial for harm reduction strategies.
Purpose of the Study:
- To provide the first detailed prospective description of daily marijuana use.
- To identify factors influencing the frequency of daily cannabis consumption.
Main Methods:
- Recruited 142 daily marijuana users via diverse online and offline channels.
- Utilized an Interactive Voice Response (IVR) system for daily self-reported marijuana and other drug use over three months.
- Collected demographic data, including age, gender, and minority status.
Main Results:
- Participants reported an average of 3.2 marijuana uses per day, often employing multiple delivery methods (bongs/vaporizers/pipes most common at 45%).
- High rates of co-occurring substance use were observed: 71% binge drank and 73% used tobacco.
- Intoxication was frequent (median 3.8/6), with severe intoxication on 24% of days. Marijuana availability and social settings were key correlates of use frequency.
- Retrospective reports of usual use differed significantly from prospective daily reports.
Conclusions:
- This study offers the first prospective, detailed account of daily marijuana use patterns.
- Daily users frequently consume cannabis multiple times daily, use diverse methods, experience intoxication, and under-report co-use of alcohol and tobacco.
- Social factors significantly impact the frequency of daily marijuana use, informing future research methodologies.
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