COVID-19 Booster Incentives

University of Southern California57,893 enrolled

Overview

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).

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

HEALTH_SERVICES_RESEARCH

Masking

SINGLE

Enrollment

57,893

Conditions

Booster Message Booster Message + Financial Incentive

Interventions

MessagingBEHAVIORAL

Booster reminder message

Financial IncentiveBEHAVIORAL

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

PlaceboOTHER

Treatment as usual; no additional message and no incentive.

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. Age: 18 and above 2. At least one COVID-19 vaccination (primary series or monovalent booster) but no vaccination dose within the past 2-months. 3. Active phone number or email Exclusion Criteria: 1\. Opt-out of health system messaging

Locations (1)

Contra Costa Health Plan

Martinez, California, United States

Outcomes

Primary Outcomes

Vaccine booster

Received a booster vaccination within 2-weeks of message.

Time frame: 2 weeks

Data from ClinicalTrials.gov

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