CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 198 enrolled
Drug / intervention
webCHAT +1 morebehavioral
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04959461
NCT04959461N/ACompleted
CompareCT.gov

A Pilot Trial to Prevent Intoxicated and Impaired Driving Among Adolescents

Stanford University·interventional·Posted Jul 13, 2021·Updated Mar 27, 2026

In Brief

A clinical study evaluating webCHAT and Usual Care for Substance-Related Disorders. Completed, enrolled 198 participants across 2 sites.

Detailed 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.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsSubstance-Related Disorders
CountriesUnited States
CollaboratorsNational Institute on Alcohol Abuse and Alcoholism (NIAAA)

Timeline

N/ACompletedFinished
20222023202420252026
First PostedJul 13, 2021
Enrollment StartJan 1, 2022
Primary CompletionMar 30, 2025
Study CompletionAug 31, 2025
TodayJul 2, 2026
Enrollment to primary: 3.2 yearsPosted 5.0 years ago

Interventions

webCHATbehavioral

A self-guided, single session web intervention that utilizes a motivational interviewing style to prevent impaired driving

Usual Carebehavioral

6 hours of driver education