Glaucoma Screening to Enhance At-Risk Californians' Health - Survey Response Incentives
GSearch-SRI
2 other identifiers
interventional
2,000
1 country
2
Brief Summary
This is a randomized trial to assess whether offering a financial incentive will improve the response rate to a telephone survey. Three incentive approaches will be compared: a $5 gift card, entry into a monthly $100 drawing, or no incentive.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Aug 2026
Typical duration for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
August 1, 2026
CompletedFirst Submitted
Initial submission to the registry
August 4, 2026
CompletedFirst Posted
Study publicly available on registry
August 10, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 1, 2028
August 10, 2026
August 1, 2026
1 year
August 4, 2026
August 4, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Survey completion
One month after the outreach call is completed
Study Arms (3)
$5 gift card
EXPERIMENTAL$100 monthly drawing
ACTIVE COMPARATORNo incentive
NO INTERVENTIONNo incentive is offered for participation in the 3-month survey call.
Interventions
A $5 gift card is offered as an incentive to participation in the 3-month survey call.
Entry into monthly drawing for $100 gift card is offered as an incentive to participation in the 3-month survey call.
Eligibility Criteria
You may qualify if:
- \- Participating in GSEARCH trial
You may not qualify if:
- \- Patients without a valid phone number
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Baywell Health
Oakland, California, 94607, United States
University of California, San Francisco
San Francisco, California, 94158, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Jeremy D Keenan, MD MPH
University of California, San Francisco
- PRINCIPAL INVESTIGATOR
Yvonne Ou, MD
University of California, San Francisco
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- SCREENING
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 4, 2026
First Posted
August 10, 2026
Study Start
August 1, 2026
Primary Completion (Estimated)
August 1, 2027
Study Completion (Estimated)
August 1, 2028
Last Updated
August 10, 2026
Record last verified: 2026-08
Data Sharing
- IPD Sharing
- Will share
- Time Frame
- After publication of the primary papers.
- Access Criteria
- Researchers interested in accessing data from this project will submit requests to the investigators following instructions available at the repository. The study's co-PIs will approve requests with clear research questions and processes in place to ensure secure storage of images.
treatment arm, age, gender, survey completion