Incentives for Influenza Vaccination

Not Applicable

Completed

• Conditions: Influenza Vaccination
• Interventions: Behavioral: Reminders; Other: Placebo; Behavioral: Financial Incentive

• Registration Number: NCT06300242
• Lead Sponsor: University of Southern California

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2024-01-17
• Primary Completion: 2024-01-24
• Study First Submitted: 2024-02-28
• Study Completion: 2024-02-29
• Study First Submitted QC: 2024-03-05
• Study First Posted: 2024-03-08
• Status Verified: 2024-05
• Last Update Submitted: 2024-05-09
• Last Update Posted: 2024-05-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 69972

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

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Exclusion Criteria

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

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Message + Financial Incentive	Reminders	Patients sent an email or SMS reminding them to get vaccinated against the flu and offering them a $50 financial incentive if they are vaccinated within 1-week.
Message + Financial Incentive	Financial Incentive	Patients sent an email or SMS reminding them to get vaccinated against the flu and offering them a $50 financial incentive if they are vaccinated within 1-week.
Active Control	Placebo	Patients not sent any reminder message.
Message Only	Reminders	Patients sent an email or SMS reminding them to get vaccinated against the flu.

Primary Outcome Measures

Name	Time	Method
Vaccination status at 1 week	1 week	influenza vaccination status as documented in the EMR and from the California Immunization Registry (CAIRS)

Secondary Outcome Measures

Name	Time	Method
Vaccination status at 1 month	1 month	Influenza vaccination status as documented in the EMR and from the California Immunization Registry (CAIRS)
Vaccination status at 2 weeks	2 weeks	Influenza vaccination status as documented in the EMR and from the California Immunization Registry (CAIRS)

Trial Locations

Locations (1)

Contra Costa Health Services; 🇺🇸 Martinez, California, United States