NCT04949711

Brief Summary

The purpose of this research study is to understand people's alcohol use in public places and their risks for harm. The overall goal of this study is to test the effects of subsidized ridesharing as an intervention to reduce self-reported alcohol-impaired driving, along with alcohol consumption and changes to mobility.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
7,034

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started May 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 25, 2021

Completed
7 days until next milestone

First Posted

Study publicly available on registry

July 2, 2021

Completed
10 months until next milestone

Study Start

First participant enrolled

May 1, 2022

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 14, 2025

Completed
21 days until next milestone

Study Completion

Last participant's last visit for all outcomes

April 4, 2025

Completed
1 year until next milestone

Results Posted

Study results publicly available

April 17, 2026

Completed
Last Updated

April 17, 2026

Status Verified

March 1, 2026

Enrollment Period

2.9 years

First QC Date

June 25, 2021

Results QC Date

March 10, 2026

Last Update Submit

March 30, 2026

Conditions

Driving DrunkAlcohol Drinking

Keywords

Drunk drivingRidesharingAlcohol DrinkingDriving under the influence (DUI)

Outcome Measures

Primary Outcomes (1)

  • Number of Participants Involved in Alcohol Impaired Driving Incidents

    Participants will provide two self-reported measures of impaired driving by indicating whether they "drove after drinking any alcohol" (driving after drinking) and "drove after drinking too much alcohol to drive safely" (driving while intoxicated) for each day during the previous 7 days. Data is recorded at baseline and at 1 week follow-up.

    At 1 week follow-up from baseline

Secondary Outcomes (4)

  • Change in Number of Days in Alcohol Consumption

    Baseline, 1 week follow-up

  • Average Number of Trips to Alcohol Outlets

    Day 3 to Day 17 of study

  • Average Duration of Trips to Alcohol Outlets

    Day 3 to Day 17 of study

  • Change in The Drinker Inventory of Consequences Score

    Baseline, 1 week follow-up

Study Arms (2)

Intervention

EXPERIMENTAL

Participants will be asked to complete 3 surveys over 2 weeks to collect in information on their alcohol use and about themselves, and receive ridesharing vouchers.

Behavioral: ridesharing voucher

Control

SHAM COMPARATOR

Participants will be asked to complete 3 surveys over 2 weeks to collect in information on their alcohol use and about themselves, and receive online shopping voucher.

Behavioral: online shopping voucher

Interventions

ridesharing voucherBEHAVIORAL

Ridesharing vouchers will be given for completing each of the online surveys, for a possible total of $80 if you complete all three surveys. You will be paid with electronic vouchers that will be sent to your cell phone.

Also known as: Uber voucher
Intervention
online shopping voucherBEHAVIORAL

Online shopping vouchers will be given for completing each of the online surveys, for a possible total of $80 if you complete all three surveys. You will be paid with electronic vouchers that will be sent to your cell phone.

Also known as: Amazon voucher
Control

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • ≥ 21 years old
  • Reside in a study city
  • Have a driver's license
  • Have access to a motor vehicle
  • Have consumed alcohol in a bar in the last 30 days
  • Own a smartphone
  • Read English

You may not qualify if:

  • Non-English speaking participants

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Columbia University Irving Medical Center

New York, New York, 10032, United States

Location

MeSH Terms

Conditions

Driving Under the InfluenceAlcohol Drinking

Condition Hierarchy (Ancestors)

Criminal BehaviorBehaviorDangerous BehaviorDrinking Behavior

Results Point of Contact

Title
Christopher Morrison, MD
Organization
Columbia University
cm3820@cumc.columbia.edu
510-501-0956

Study Officials

  • Christopher Morrison, PhD

    Columbia University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor of Epidemiology

Study Record Dates

First Submitted

June 25, 2021

First Posted

July 2, 2021

Study Start

May 1, 2022

Primary Completion

March 14, 2025

Study Completion

April 4, 2025

Last Updated

April 17, 2026

Results First Posted

April 17, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will share

Data from the study will be submitted and shared with NIAAA Data Archive (NIAAADA), a data repository housed within the NIMH Data Archive (NDA).

Shared Documents
ANALYTIC CODE
Time Frame
Data will become available March 2028, 2 years after the end of the project, as designated by NIAAADA policy.
Access Criteria
Study data can be accessed on the NIAAADA website: https://nda.nih.gov/niaaa/getting-data For access to individual-level data, researchers will need to receive authorization from NIAAA by completing the NDA Data Access Request (DAR).
More information

Locations

US(1)