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Clinical Trials/NCT06300242
NCT06300242CompletedNot Applicable

Financial Incentives for Influenza Vaccination

University of Southern California2 sites in 1 country69,972 target enrollmentStarted: January 17, 2024Last updated:
Conditions

Trial Snapshot

Phase
Not Applicable
Status
Completed
Enrollment
69,972
Locations
2
Primary Endpoint
Vaccination status at 1 week

Study Overview

Brief Summary

In this work, we are assessing the impact of messaging with or without a $50 financial incentive on influenza vaccination rates in a county health system. Our main hypothesis is that a message with a $50 financial incentive will increase vaccination rates relative to a control/"treatment as usual" group. We further hypothesize that the financial incentive will increase vaccination rates relative to the message only arm.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Health Services Research
Masking
None

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Ages 18 and over
  • Empaneled patients or non-empaneled patients with a primary care visit in past 18 months with valid insurance
  • Due for an annual flu shot according to the electronic medical record
  • Active phone number or email
  • Do not have "Do not contact" flag

Exclusion Criteria

  • Under age 18
  • Received an annual flu shot based on medical record

Outcomes

Primary Outcomes

Vaccination status at 1 week

Time Frame: 1 week

influenza vaccination status as documented in the EMR and from the California Immunization Registry (CAIRS)

Secondary Outcomes

  • Vaccination status at 1 month(1 month)
  • Vaccination status at 2 weeks(2 weeks)

Investigators

Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Mireille Jacobson

Associate Professor

University of Southern California

Study Sites (2)

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