Recruiting
Glaucoma Screening to Enhance At-Risk Californians' Health - Survey Response Incentives
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.
ClinicalTrials.gov IDNCT07755748
PhaseNA
Enrollment2000
SponsorUniversity of California, San Francisco
Age50 Years
SexALL
Conditions studied
Screening
About this study
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.
Interventions
- Other: $5 gift card — A $5 gift card is offered as an incentive to participation in the 3-month survey call.
- Other: $100 monthly drawing — Entry into monthly drawing for $100 gift card is offered as an incentive to participation in the 3-month survey call.
Primary outcomes
- Survey completion (One month after the outreach call is completed)
Eligibility information
Inclusion Criteria:
\- Participating in GSEARCH trial
Exclusion Criteria:
\- Patients without a valid phone number
Study locations
- Baywell Health, Oakland, California 94607 United States
- University of California, San Francisco, San Francisco, California 94158 United States
Before you participate: Varda Clinical is an independent discovery tool, not the study sponsor or a medical provider. Eligibility can only be determined by the official study team. Discuss potential risks and benefits with a qualified healthcare professional.
Source: ClinicalTrials.gov. Record last refreshed by Varda Clinical: 2026-09-30.