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Original Articles

Associations between marijuana use patterns and recreational legislation changes in a large Colorado college student sample

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Pages 211-221 | Received 25 Jun 2018, Accepted 16 May 2019, Published online: 05 Jun 2019
 

Abstract

Background: Many states in the U.S. have changed how they regulated medicinal and/or recreational marijuana. Understanding the impact of these policy changes on marijuana use and perceptions of acceptability and safety of use is needed. The current study examined perceptions and patterns of marijuana use among college students, a population at increased risk for initiation and heavy use.

Method: Data include Colorado university students and national sample averages. We used repeated cross-sectional analyses to examine responses to the American College Health Association National College Health Assessment and added marijuana measures. We examined differences in use and norms pre- to post-legalization among Colorado college students. Colorado data were also compared to national summary statistics.

Results: Social norms, use initiation, and use recency and frequency in Colorado increased significantly across changes in recreational legislation. Descriptive norms and rates of ever users in Colorado increased faster than national averages.

Conclusions: Results suggest recreational legalization increases how quickly social norms become more approving. As marijuana policy continues to change, implementing social norms interventions alongside legislative changes may offset increases in risk for use initiation and frequency by countering increased social norms favorable to use.

Disclosure statement

The authors report no conflicts of interest. The authors alone are responsible for the design, content, and writing of this paper.

Data availability

The Colorado data that support the findings of this study are available from the corresponding author upon reasonable request.

Additional information

Funding

Research reported herein is supported by a grant [2017-3415] from the Colorado Department of Public Health and Environment and from Colorado State University’s College of Health and Human Sciences School of Social Work.

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