University of California, San Francisco
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.
This is a sub-trial nested within a larger randomized trial called GSEARCH. The parent trial evaluates whether telemedicine glaucoma screening is more effective for detecting undiagnosed glaucoma cases compared with education alone or delayed intervention, with the final outcomes assessed via a follow-up telephone surveys at 3 months and 12 months. In this sub-study, we will assess whether adding an incentive improves the survey response completion rate. Participants enrolled in the parent GSEARCH trial will be eligible. Participants will be randomized to one of three incentive approaches, off…
Inclusion Criteria: \- Participating in GSEARCH trial Exclusion Criteria: \- Patients without a valid phone number
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.
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