Responsible Marijuana Sales Practices to Reduce the Risk of Selling to Intoxicated Customers

NCT ID: NCT06235632

Last Updated: 2025-12-05

Study Results

Results pending

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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Recruitment Status

ENROLLING_BY_INVITATION

Clinical Phase

NA

Total Enrollment

229 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-01-15

Study Completion Date

2027-08-31

Brief Summary

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The new recreational marijuana markets are contributing to polysubstance-impaired driving and other harms, especially when marijuana is used in combination with alcohol, by selling marijuana to obviously-intoxicated customers. In this study, the effectiveness of an intervention to reduce the risk of marijuana sales to obviously-intoxicated customers will be tested in the state-licensed recreational marijuana market in Oregon, one of the first states to ban such sales. The intervention will combine efforts by state regulators to increase deterrence of the state law prohibiting marijuana sales to obviously-intoxicated customers with training of store personnel to recognize signs of intoxication and refuse sales. It will also include testing the rate at which visibly intoxicated customers are refused alcohol at nearby establishments that sell alcohol either on-site or off-site

Detailed Description

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The new recreational marijuana markets are contributing to morbidity and mortality due to marijuana- and polysubstance-impaired driving and other harms by selling a social intoxicant (i.e., marijuana) to already intoxicated customers. Impairment increases when marijuana is combined with alcohol, making driving particularly risky and also contributing to other injuries and violence. In recreational marijuana markets, deterrence efforts to reduce impaired driving directed at drivers face challenges due to dispute over THC levels in per se laws and lack of valid field sobriety tests. An alternative prevention approach is to decrease access to marijuana by alcohol-impaired customers. The goal of this research is to test the effectiveness of a policy and training (PT) intervention in the state-licensed recreational marijuana market in Oregon, where state law bans sales to obviously-intoxicated customers. It combines policy efforts by state regulators to increase deterrence of Oregon's law and motivate store management to comply and training of store personnel in skills to recognize intoxication and refuse sales, using a responsible marijuana vendor online training developed by the research team. The specific aims of the project are to: 1) conduct pseudo-intoxicated patron (PiP) assessments at state-licensed recreational marijuana stores (n=213) in the greater Portland metropolitan area (i.e., Clackamas, Multnomah, and Washington Counties) in Year 1; 2) implement a PT intervention in Year 2 designed to increase compliance with Oregon law prohibiting sale of recreational marijuana products to obviously-intoxicated customers with a subsample of stores (n=68), assigned at random, that intends to a) make owners/managers of recreational marijuana stores aware of Oregon's law prohibiting sales of marijuana to obviously-intoxicated customers, b) increase their risk perception and motivation to comply with this law, and c) train store personnel in skills needed to recognize signs of intoxication in customers and refuse sales; 3) compare PT intervention stores to usual and customary policy and training (UC-PT) stores (n=145) in a randomized controlled trial by posttesting state-licensed recreational marijuana stores in greater Portland with PiP assessments for refusal of sales in Year 3; and 4) estimate impact of the PT intervention on refusal to PiPs by implementing the PT intervention with the remaining stores in Portland in Year 3 in a partial cross-over design and assessing state-licensed stores in greater Portland with the PiP protocol in Year 4 and in Year 5. The research is innovative and high impact by testing one of the first interventions to prevent recreational marijuana sales to obviously-intoxicated customers in one of the first states to ban such sales to reduce the risk of poly-substance impaired driving and other harms. The design allows for reproducibility by using a partial cross-over to enhance power with both between- and within-group comparisons. The PT intervention can be a model intervention to improve compliance with regulations on recreational marijuana sales in other states that have legalized recreational marijuana, now numbering 17 U.S. states, or that are considering legalization.

Conditions

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Alcoholic Intoxication Automobile Accident Cannabis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

This is a pretest-posttest randomized control partial cross-over trial. A subsample of stores will be randomly assigned to receive the intervention while the rest will receive the control training. After the posttest assessment is conducted, the remaining control stores will receive the intervention.
Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Policy and Training Intervention

This intervention includes the combination of a 2-hour policy meeting held by the Oregon Liquor and Cannabis Commission to teach the current laws around selling recreational marijuana as well as access to the TrainToTend program which contains 5 modules: The Laws, ID Checking, Health Effects, Customer Service, and Rules of the Trade

Group Type EXPERIMENTAL

Policy and Training Intervention

Intervention Type BEHAVIORAL

The intervention is a combination of a policy training and access to an in-depth training program to teach marijuana vendors the skills needed to refuse intoxicated customers

Usual and Customary Policy and Training (UC-PT) (Control) Condition

This is basic Responsible Marijuana Vendor training currently provided by the Oregon Liquor and Cannabis Commission and includes reading a booklet on selling recreational marijuana responsibly and passing and exam

Group Type ACTIVE_COMPARATOR

Usual and Customary Policy and Training (UC-PT) (Control) Condition

Intervention Type BEHAVIORAL

The active control training that is already provided to marijuana vendors by the Oregon Liquor and Cannabis Commission

Interventions

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Policy and Training Intervention

The intervention is a combination of a policy training and access to an in-depth training program to teach marijuana vendors the skills needed to refuse intoxicated customers

Intervention Type BEHAVIORAL

Usual and Customary Policy and Training (UC-PT) (Control) Condition

The active control training that is already provided to marijuana vendors by the Oregon Liquor and Cannabis Commission

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Recreational Marijuana Stores:

* Located in the greater Portland, Oregon metropolitan area or Salem, Oregon metro area
* Hold an active recreational marijuana license from the Oregon Liquor Control Commission (OLCC) as of July 1, 2022
* A retail store that sells recreational marijuana products
* Store is open for business
* Have a smart phone, tablet computer, or personal computer with Internet access
* Owner or manager consent for store to participate
* Store personnel:

* Own or employed at a state-licensed recreational marijuana store in greater Portland, Oregon or Salem, Oregon metro area
* Sell recreational marijuana products in a retail store
* Aged 21 or older (by state law)
* Able to read English
* Have a smart phone, tablet computer, or personal computer with Internet access
* Consent to participate
* Alcohol Establishments

* Located in the greater Portland, Oregon or Salem metropolitan area
* Hold an active liquor license from the Oregon Liquor Control Commission (OLCC) as of July 1, 2022
* An establishment that sells alcohol for on-site or off-site consumption
* Store is open for business

Exclusion Criteria

* Recreational Marijuana Stores:

* Have an inactive, suspended, or revoked recreational marijuana license
* Licensed to sell only medical marijuana
* Store Personnel:

• Cannot read English
* Alcohol Establishments • Have an inactive, suspended, or revoked liquor license
Minimum Eligible Age

21 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute on Alcohol Abuse and Alcoholism (NIAAA)

NIH

Sponsor Role collaborator

Pacific Institute for Research and Evaluation

OTHER

Sponsor Role collaborator

National Opinion Research Center

OTHER

Sponsor Role collaborator

Klein Buendel, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Gill Woodall, PhD

Role: PRINCIPAL_INVESTIGATOR

Klein Buendel, Inc.

Locations

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Klein Buendel, Inc.

Golden, Colorado, United States

Site Status

Countries

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United States

Other Identifiers

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1R01AA031591-01A1

Identifier Type: NIH

Identifier Source: secondary_id

View Link

0347

Identifier Type: -

Identifier Source: org_study_id

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