Lottery Incentive Nudges to Increase Influenza Vaccinations

Status Completed

Clinical Trial Summary

In the current study, the study team will explore whether small incentives are effective at promoting flu vaccine uptake. The study is designed to compare the relative efficacy of incentives of equal perceived expected value (EV) or equal implementation costs, to assess whether people are more likely to get vaccinated in response to lotteries with very high payoffs than to small certain cash payout or slightly higher-probability, more moderate payoffs. In particular, given the potential appeal of official state lottery tickets, one study arm will receive a Pennsylvania scratch-off lottery ticket for getting a flu vaccine. A primary hypothesis is that lotteries will outperform simple reminders (encouraging respondents to get the flu shot at their upcoming appointment) and the standard of care, representing the ambient healthcare system and public health campaigns to increase vaccination.

Clinical Trial Description

During the 2021-22 flu season, the study team will contact Geisinger patients who have a primary care or specialist appointment scheduled during flu season and encourage them to get a flu shot. Patients will be randomized into 4 to 9 study arms, depending on a sample size projection completed in August 2021. Arms will test the relative efficacy of a variety of small monetary incentives on flu shot uptake. Incentives may include (a) a $1 Pennsylvania scratch-off lottery ticket (with top prize of $5,000), (b) $1 in cash, (c) entry into a raffle for $5,000 absent upfront odds, (d) entry into a raffle for $5,000, with 1-in-5,000 odds of winning, (d) entry into a raffle for $50, with 1-in-50 odds of winning, and (e) entry into a raffle for $500, with 1-in-500 odds of winning. There will be one no-contact control arm and at least 1 reminder control arm (with additional control arms added given sufficient sample size and additional message versions to be tested). Included in the study will be current Geisinger patients 18+ years of age with no contraindications for flu vaccine who have an appointment scheduled during the study period with a provider who can administer the vaccine. The primary study outcomes will be the rates of flu vaccination and flu diagnosis during the 2021-22 season by targeted patients. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT05012163
Study type	Interventional
Source	National Bureau of Economic Research, Inc.
Contact
Status	Completed
Phase	N/A
Start date	September 4, 2021
Completion date	December 31, 2022

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT05523089` - The Effectiveness of CD388 to Prevent Flu in an Influenza Challenge Model in Healthy Adults	Phase 2
Completed	`NCT05009251` - Using Explainable AI Risk Predictions to Nudge Influenza Vaccine Uptake	N/A
Completed	`NCT03282240` - Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Participants ≥65 Years in the US	Phase 3
Completed	`NCT00971425` - Evaluation of the Immune Response and the Safety of a Pandemic Influenza Candidate Vaccine (H1N1)	Phase 3
Completed	`NCT00968526` - Study to Evaluate Immunogenicity and Safety of an Investigational Influenza Vaccine (H1N1) in Adults	Phase 3
Completed	`NCT00968539` - Study to Evaluate the Immunogenicity & Safety of an Investigational Influenza Vaccine (H1N1) in Adults	Phase 3
Completed	`NCT05525494` - Patient Portal Flu Vaccine Reminders (5)	N/A
Completed	`NCT04074928` - Safety and Immunogenicity Study of QIVc in Healthy Pediatric Subjects	Phase 3
Completed	`NCT04695717` - This Study Was Conducted to Evaluate the Safety and Immunogenicity of IVACFLU-S Produced in Children From 6 Months to Under 18 Years Old and the Elderly Over 60 Years Old in Vietnam	Phase 3
Completed	`NCT04109222` - Collection of Serum Samples From Children and Older Adults Receiving the 2019-2020 Formulations of Fluzone® Quadrivalent and Fluzone® High-Dose Influenza Vaccines, Respectively	Phase 4
Completed	`NCT03888989` - Response to Influenza Vaccine During Pregnancy	Phase 1
Completed	`NCT02587221` - Clinical Study to Evaluate the Efficacy, Safety and Immunogenicity of an MF59-Adjuvanted Quadrivalent Influenza Vaccine Compared to Non-influenza Vaccine Comparator in Adults ≥ 65 Years of Age	Phase 3
Completed	`NCT03453801` - The Role of CD4+ Memory Phenotype, Memory, and Effector T Cells in Vaccination and Infection	Phase 1
Completed	`NCT01440387` - A Study of Immunogenicity and Safety of GSK Biologicals' Influenza Vaccine FLU-Q-QIV in Adults Aged 18 Years and Older	Phase 3
Terminated	`NCT01195779` - Trial to Evaluate Safety and Immunogenicity of GSK Biologicals' Influenza Vaccine GSK2584786A in Healthy Children	Phase 2
Completed	`NCT03321968` - Lot-to-lot Consistency of a Plant-Derived Quadrivalent Virus-Like Particles Influenza Vaccine in Healthy Adults	Phase 3
Completed	`NCT00972517` - Study to Evaluate the Immunogenicity and Safety of an Investigational Influenza Vaccine (H1N1) in Children	Phase 3
Completed	`NCT04570904` - Broadening Our Understanding of Early Versus Late Influenza Vaccine Effectiveness
Recruiting	`NCT03331991` - Prevention of Influenza and Other Wintertime Respiratory Viruses Among Healthcare Professionals in Israel	N/A
Recruiting	`NCT06160128` - COVID-19 Pharmacotherapy Effectiveness in the VA Healthcare System