Substance-Related Disorders
Conditions
Keywords
impaired driving
Brief 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.
Detailed description
Alcohol and marijuana (AM) are the most commonly used substances among adolescents in the U.S. The consequences of AM use are significantly higher relative to use of either substance alone. This study builds on effective interventions that have demonstrated reductions in alcohol and/or marijuana use and reduced consequences one year later, and proposes to adapt one of those interventions, CHAT, to the web (web-CHAT). The investigators will evaluate the efficacy of web-CHAT among 15.5-17-year-old adolescents (n=150) recruited when teen participants are attending behind-the-wheel training. The study has the potential to promote public welfare by improving adolescent health outcomes and reducing risky driving behaviors that can have substantial monetary and social costs, as well as by providing unique insight into what mediates reduced risky driving attitudes behaviors among those in the intervention. The study is innovative because it is for both youth who are at risk for substance use as well as those who are not, and it is delivered during a teachable moment when adolescents receive driver's education. Finally, this study can provide unique insights about the efficacy of web-CHAT to reduce marijuana initiation, use, and risky driving attitudes in the context of a changing marijuana policy climate. A 3-year study is proposed to test the feasibility of research procedures in a driver education setting and pilot the efficacy of web-CHAT. The investigators will test whether web-CHAT reduces alcohol and/or marijuana initiation or use compared to teens in UC, at three and six-month follow-up.
Interventions
A self-guided, single session web intervention that utilizes a motivational interviewing style to prevent impaired driving
6 hours of driver education
Sponsors
Study design
Intervention model description
Teen participants will be randomized to a single-session, self-guided web-intervention called webCHAT or usual care after completing an online baseline survey. Participants will complete follow-up surveys 3 and 6-months after baseline.
Eligibility
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Alcohol and/or Cannabis Use | Baseline through 6-month-follow-up | Total number of participants who self-reported an increased frequency of using the specified substance or substance combination in the past 3 months at 3- and/or 6-month-follow-up when compared to baseline, as denoted by a binary variable (1 = increased frequency; 0 = maintained or decreased frequency) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Driving Under the Influence | Assessed at 6 month follow-up | Number and percentage of participants who drove under the influence of alcohol and/or cannabis in the past 90 days |
| Riding With Impaired Driver | Baseline through month 6 | Total number of participants who self-reported an increased frequency of riding with an impaired driver (RWID) who had consumed the specified substance or combination of substances in the past 3 months at 3- and/or 6-month-follow-up when compared to baseline as indicated by a binary (1 = increased frequency; 0 = maintained or reduced frequency) |
| Perceived Descriptive Norms | 6 month follow-up | Percentage of their peers (0% of their peers-100% of their peers) participants believe have consumed alcohol, cannabis, or both simultaneously in past month |
Countries
United States
Contacts
Professor
Baseline characteristics
| Characteristic | — |
|---|---|
| Age, Categorical <=18 years | 198 Participants |
| Age, Categorical >=65 years | 0 Participants |
| Age, Categorical Between 18 and 65 years | 0 Participants |
| CRAFFT Screener <1 | 46 Participants |
| CRAFFT Screener >=1 | 99 Participants |
| Ethnicity (NIH/OMB) Hispanic or Latino | 5 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 189 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants |
| Lifetime History of Riding with Impaired Driver Did Not Ride with Impaired Driver | 73 Participants |
| Lifetime History of Riding with Impaired Driver Rode with Impaired Driver | 34 Participants |
| Lifetime Substance Use Alcohol | 40 Participants |
| Lifetime Substance Use Cannabis | 29 Participants |
| Lifetime Substance Use No Lifetime History | 79 Participants |
| Lifetime Substance Use Simultaneous Cannabis and Alcohol Use | 10 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 2 Participants |
| Race (NIH/OMB) Asian | 3 Participants |
| Race (NIH/OMB) Black or African American | 2 Participants |
| Race (NIH/OMB) More than one race | 13 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 1 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 2 Participants |
| Race (NIH/OMB) White | 158 Participants |
| Sex/Gender, Customized Gender Identity Female | 64 Participants |
| Sex/Gender, Customized Gender Identity Male | 79 Participants |
| Sex/Gender, Customized Gender Identity Other | 0 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 106 | 0 / 92 |
| other Total, other adverse events | 0 / 106 | 0 / 92 |
| serious Total, serious adverse events | 0 / 106 | 0 / 92 |