NCT06235632

Brief Summary

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

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
229

participants targeted

Target at P75+ for not_applicable

Timeline
16mo left

Started Jan 2024

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
enrolling by invitation

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress64%
Jan 2024Aug 2027

Study Start

First participant enrolled

January 15, 2024

Completed
8 days until next milestone

First Submitted

Initial submission to the registry

January 23, 2024

Completed
9 days until next milestone

First Posted

Study publicly available on registry

February 1, 2024

Completed
3.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2027

Expected
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2027

Last Updated

December 5, 2025

Status Verified

December 1, 2025

Enrollment Period

3.5 years

First QC Date

January 23, 2024

Last Update Submit

December 4, 2025

Conditions

Keywords

randomized partial cross-over trialResponsible Marijuana Vendor training

Outcome Measures

Primary Outcomes (1)

  • Refusal Rate of Sales of Marijuana to Obviously-intoxicated Customers

    The rate at which establishments refuse to sell to obviously-intoxicated customers will be obtained via a pseudo-intoxicated patron (PiP) assessment

    Establishments will be evaluated by PiP assessments 4 times (including baseline) over 5 years

Secondary Outcomes (1)

  • Refusal Rate of Sales of Alcohol to Obviously-intoxicated Customers

    Alcohol establishments will be evaluated by PiP assessments 1 time during Year 1

Study Arms (2)

Policy and Training Intervention

EXPERIMENTAL

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

Behavioral: Policy and Training Intervention

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

ACTIVE COMPARATOR

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

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

Interventions

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

Policy and Training Intervention

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

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

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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
  • +4 more criteria

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Klein Buendel, Inc.

Golden, Colorado, 80401, United States

Location

MeSH Terms

Conditions

Alcoholic IntoxicationMarijuana Abuse

Interventions

Policy

Condition Hierarchy (Ancestors)

Alcohol-Related DisordersSubstance-Related DisordersChemically-Induced DisordersMental Disorders

Intervention Hierarchy (Ancestors)

Health Care Economics and Organizations

Study Officials

  • Gill Woodall, PhD

    Klein Buendel, Inc.

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
CROSSOVER
Model Details: 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.
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 23, 2024

First Posted

February 1, 2024

Study Start

January 15, 2024

Primary Completion (Estimated)

July 1, 2027

Study Completion (Estimated)

August 31, 2027

Last Updated

December 5, 2025

Record last verified: 2025-12

Locations