Behavioral Interventions to Increase Seat Belt Wearing and Decrease Handheld Phone Use While Driving
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- University of Pennsylvania
- Enrollment
- 1,139
- Locations
- 2
- Primary Endpoint
- Proportion of trips with seat belt use
Study Overview
Brief Summary
The study team is proposing to conduct a randomized controlled trial to determine the effectiveness of behavioral and financial incentives on phone use while driving and seat belt adherence. Each arm will receive a support text if their app is not collecting data. The behavioral engagement intervention includes persuasive education, mental contrasting with implementation intentions, customized habit tips, weekly feedback about participants' streaks, and encouraging SMS texts. The two financial incentive interventions add on weekly raffles or shared pots for participants with perfect streaks.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Factorial
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Are a GM/OnStar customer.
- •Are 18 or older.
- •Meet minimum trip requirements.
- •Uses vehicle with OnStar
- •At least 5 weeks of baseline trip data with >=8 trips/week at baseline on average
- •Baseline seat belt use <= 75% on trips less than 2 miles and <= 90 on trips greater than 2 miles
- •English reading ability
- •Have an email address
- •Have a smartphone with iPhone iOS 12 or later or Android OS 7 or later
Exclusion Criteria
- •You are unable to read and understand English
Outcomes
Primary Outcomes
Proportion of trips with seat belt use
Time Frame: 105 days
Calculated as the number of trips during which a driver's seat belt click was detected, divided by total number of trips (defined as 1/10 of a mile or greater).
Secondary Outcomes
- Seconds of active (handheld) phone use per hour of driving(105 days)
Investigators
M. Kit Delgado, MD
Assistant Professor of Emergency Medicine
University of Pennsylvania