NCT05521321

Brief Summary

The Stanford Smart Talk Cannabis Awareness and Prevention Curriculum includes 5 lessons, each providing activities, online quiz games, and worksheets in addition to presentations, resources, and other materials aimed at addressing key factors associated with youth cannabis use, including changing adolescents' attitudes towards and misperceptions about cannabis; increasing their refusal skills to pulls of marketing and social media; reducing stress and depression which have been linked to cannabis initiation and use; improving coping skills; and decreasing intentions and actual use of all cannabis products. The aim of this study is to investigate the extent to which the curriculum changes students' intentions to use and actual use of cannabis.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
658

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Oct 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 26, 2022

Completed
4 days until next milestone

First Posted

Study publicly available on registry

August 30, 2022

Completed
1 month until next milestone

Study Start

First participant enrolled

October 1, 2022

Completed
2.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 16, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 16, 2025

Completed
1.2 years until next milestone

Results Posted

Study results publicly available

July 28, 2026

Completed
Last Updated

July 28, 2026

Status Verified

June 1, 2026

Enrollment Period

2.6 years

First QC Date

August 26, 2022

Results QC Date

May 13, 2026

Last Update Submit

June 30, 2026

Conditions

Keywords

youthcannabiseducationhealthpreventionmarijuana

Outcome Measures

Primary Outcomes (5)

  • Cannabis Use (Lifetime)

    Investigator-originated survey measures (questions) assess lifetime cannabis use. This outcome measure assesses cannabis use.

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Cannabis Use (Past 30 Days)

    Investigator-originated survey measures (questions) assess cannabis use in the past 30 days.

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Intention to Use Cannabis in the Future - Smoked Cannabis

    Investigator-originated survey measures (questions) assessing participant intention to use cannabis in the future. Assessed on a Likert-scale (1 - Definitely not, 4 - Definitely yes).

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Intention to Use Cannabis in the Future - Vaped Cannabis

    Investigator-originated survey measures (questions) assessing participant intention to use cannabis in the future. Assessed on a Likert-scale (1 - Definitely not, 4 - Definitely yes).

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Intention to Use Cannabis in the Future - Cannabis Edibles

    Investigator-originated survey measures (questions) assessing participant intention to use cannabis in the future. Assessed on a Likert-scale (1 - Definitely not, 4 - Definitely yes).

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

Secondary Outcomes (4)

  • Cannabis Knowledge

    Baseline and Post-intervention (approx. 3 days post-baseline)

  • Perceived Addictiveness and Harmfulness - Smoked Cannabis

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Perceived Addictiveness and Harmfulness - Vaped Cannabis

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

  • Perceived Addictiveness and Harmfulness - Cannabis Edibles

    Baseline, Post-intervention (approx. 3 days post-baseline), and 6-month Follow-up

Study Arms (2)

Receives the Stanford Smart Talk Cannabis Prevention and Awareness curriculum

EXPERIMENTAL

Stanford Smart Talk Cannabis Prevention and Awareness curriculum administered

Behavioral: Stanford Smart Talk Cannabis Awareness and Prevention curriculum

Does not receive Stanford Smart Talk Cannabis Prevention and Awareness curriculum

NO INTERVENTION

Receives another curriculum or no cannabis prevention curriculum

Interventions

Stanford Cannabis Awareness and Prevention curriculum delivered as a 5-session curriculum administered in a school classroom setting.

Receives the Stanford Smart Talk Cannabis Prevention and Awareness curriculum

Eligibility Criteria

Age10 Years - 20 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Middle school and high school students receiving health education at schools participating in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Stanford University

Palo Alto, California, 94304, United States

Location

Related Links

MeSH Terms

Conditions

Marijuana Abuse

Condition Hierarchy (Ancestors)

Substance-Related DisordersChemically-Induced DisordersMental Disorders

Results Point of Contact

Title
Dr. Bonnie Halpern-Felsher, PhD
Organization
Stanford University

Study Officials

  • Bonnie Halpern-Felsher, Ph.D.

    Stanford University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Marron and Mary Elizabeth Kendrick Professor in Pediatrics II

Study Record Dates

First Submitted

August 26, 2022

First Posted

August 30, 2022

Study Start

October 1, 2022

Primary Completion

May 16, 2025

Study Completion

May 16, 2025

Last Updated

July 28, 2026

Results First Posted

July 28, 2026

Record last verified: 2026-06

Data Sharing

IPD Sharing
Will not share

Locations