N/A
N=198
Preventing Impaired Driving Among Adolescents
Substance-Related Disorders
Bottom Line
View on ClinicalTrials.gov: NCT04959461 ↗Enrolled (actual)
198
Serious AEs
0.0%
Results posted
Mar 2026
Primary outcome: Primary: Alcohol and/or Cannabis Use — 8; 2; 7; 2 Participants — p=0.24
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- webCHAT (Behavioral); Usual Care (Behavioral)
- Age
- Pediatric · 15+ yrs
- Sex
- All
- Sponsor
- Stanford University
- Primary completion
- Mar 2025
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Alcohol and/or Cannabis Use |
8; 2; 7; 2; 4; 2 | 0.24 |
| SECONDARY Driving Under the Influence |
2; 3 | 0.63 |
| SECONDARY Riding With Impaired Driver |
9; 3; 6; 0; 0; 0 | 0.12 |
| SECONDARY Perceived Descriptive Norms |
45; 55; 36; 48; 26; 36 | 0.004 sig |
Summary
The primary goal of this project is to evaluate the efficacy of webCHAT, a single-session web-intervention, on reducing impaired driving among adolescents receiving behind-the-wheel training at driver education programs.
Eligibility Criteria
Inclusion Criteria
- 15.5-17 year olds enrolled in driver education school
- Access to a computer or smartphone
- Within one month of taking their driver's licensing exam
Exclusion Criteria
- Under 15.5 or over 17 years old
- Not enrolled in one of the participating schools
- Non-English speaking
Data sourced from ClinicalTrials.gov (NCT04959461). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.