Utilizing Text Messaging to Improve Vehicle Safety Among At-Risk Young Adults

Study Overview
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Brief Summary
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The Safe Vehicle Engagement (SaVE) trials are 3 parallel randomized clinical trials that aim to determine the impact of text messaging (SMS) vehicle safety interventions vs. weekly SMS vehicle safety self-monitoring alone on seat belt use, distracted driving and drink driving among young adults identified in the emergency department (ED) with risky vehicle behaviors.

Detailed Description
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The investigators propose to conduct 3 related randomized, controlled, parallel group, assessor-blind, superiority trials of 6-week text message interventions vs. SMS vehicle safety self-monitoring in young adult participants with risky vehicle behaviors. A total of 500 adult participants will be enrolled: 300 into Cohort 1 (seat belt); 100 into Cohort 2 (distracted driving); 100 into Cohort 3 (drink driving). Each SMS intervention will be designed to target a single risk behavior. The study is powered to show a difference of 15% in the percentage of subjects reporting seat belt use at week 8. Other cohort trials (i.e. distracted driving, drink driving) and outcomes will be exploratory.

Official Title
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Utilizing Text Messaging to Improve Vehicle Safety Among At-Risk Young Adults

Conditions
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Risk Reduction

Intervention / Treatment
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* Behavioral: SMS Dialogue
* Behavioral: SMS Assessments


Participation Criteria
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Eligibility Criteria
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Inclusion criteria: 1) Adult participant (age ≥ 18 years & ≤25 years) Cohort 1: Any vehicle trip in past 2 weeks where individual reports not using a seat belt Cohort 2: Any vehicle trip in past 2 weeks where individual reports phone was used to type while driving and car was moving Cohort 3: Any vehicle trip in past 2 weeks where individual reports driving a vehicle within 2 hours after consuming 2 or more drinks Exclusion criteria: Member of a protected population (prisoner) Unable to provide informed consent No plan to drive and/or ride in a vehicle in the next month Non-English speaking No personal mobile phone or planning on changing phone in next 3 months

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 25 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Prospective, randomized, 2-arm (intervention vs. control)
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: SMS Intervention<br>Once-weekly automated SMS dialogue sessions or micro-interventions and use behavior change techniques including self-monitoring with performance feedback and goal support | Behavioral: SMS Dialogue<br>* Once-weekly SMS dialogue sessions or micro-interventions and use behavior change techniques (BCTs) including self-monitoring with performance feedback and goal support<br>|
| Active Comparator: SMS Assessments<br>Once-weekly SMS assessments related to their target risk behavior without receiving any feedback or goal support | Behavioral: SMS Assessments<br>* Once-weekly SMS assessments of motor vehicle risks<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of participants who report a vehicle risk | Cohort 1: Any vehicle trip in past 2 weeks where individual reports not using a seat belt e. Cohort 2: Any vehicle trip in past 2 weeks where individual reports phone was used to type while driving and car was moving f. Cohort 3: Any vehicle trip in past 2 weeks where individual reports driving a vehicle within 2 hours after consuming 2 or more drinks | Week 8 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of ED patients who screen positive and agree to enroll | Measure of feasibility | Baseline | 
| Percentage of ED patients enrolled in the Intervention arm who complete at least 50% of the SMS assessments during the intervention period | Measure of acceptability | 2 weeks to 8 weeks | 
| Percentage of Subjects with Vehicle Risks | Cohort 1: Any vehicle trip in past 2 weeks where individual reports not using a seat belt e. Cohort 2: Any vehicle trip in past 2 weeks where individual reports phone was used to type while driving and car was moving f. Cohort 3: Any vehicle trip in past 2 weeks where individual reports driving a vehicle within 2 hours after consuming 2 or more drinks | Week 14 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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text message, behavioral intervention, motor vehicle