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OpenTrials
Completed

NCT Number: NCT05648773

COVID-19 Booster Incentives

The goal of this work is to understand whether small financial incentives and messaging can increase the take-up of COVID-19 boosters among patients empaneled at a county public health system. The motivation for this work is the relatively low take-up of COVID-19 boosters. In California, where our experiment is based, only 59% of the population has been boosted, with only 13% receiving the recommended bivalent booster (State of California, 2022).

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Key information

Conditions

Booster Message Booster Message + Financial Incentive

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Contra Costa Health Plan

Martinez, California, 94553, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age: 18 and above
  • At least one COVID-19 vaccination (primary series or monovalent booster) but no vaccination dose within the past 2-months.
  • Active phone number or email

Exclusion criteria

  • Opt-out of health system messaging

Treatment and study plan

Messaging

Behavioral

Booster reminder message

Financial incentive

Behavioral

Financial Incentive for getting boosted within 2-weeks of the message

Placebo

Other

Treatment as usual; no additional message and no incentive.

Primary outcomes

  1. Vaccine booster

    Time frame: 2 weeks

    Received a booster vaccination within 2-weeks of message.

Sponsors and collaborators

Lead sponsor

University of Southern California

Other

Collaborators

  • J-PAL North America

Registry information

Official study title

COVID-19 Booster Incentives in a County-Run Health System

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Dec 13, 2022
Registry last updated
Aug 14, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.