Booster MessageNCT05648773
COVID-19 Booster Incentives
A study testing Messaging and Financial Incentive in people with Booster Message and Booster Message + Financial Incentive, run by University of Southern California at 1 site in United States.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Booster Message, Booster Message + Financial Incentive
- What is being tested?
- Messaging and Financial Incentive
- Type of treatment
- Vaccines, Lifestyle or therapy programme
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 57,893 participants
- Where
- 1 siteUnited States
- Study dates
- 8 Dec 2022to 23 Dec 2022
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 1. Opt-out of health system messaging
Trial locations and contacts
1 site in 1 country.
United States1 site
Contra Costa Health Plan
Martinez, California, 94553
About this study
Official title: COVID-19 Booster Incentives in a County-Run Health System
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).
- Being tested
- Messaging, Financial Incentive, Placebo
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MessagingBehavioural
Booster reminder message
Financial IncentiveBehavioural
Financial Incentive for getting boosted within 2-weeks of the message
PlaceboOther
Treatment as usual; no additional message and no incentive.
| Study group | Role | What they receive |
|---|---|---|
| Message Only | Experimental | Email or SMS Booster Vaccination Reminder Receives: Behavioral: Messaging |
| Message + Financial Incentive | Experimental | Email or SMS Booster Vaccination Reminder + Offer of a financial incentive for getting boosted in the next 2 weeks. Receives: Behavioral: Messaging; Behavioral: Financial Incentive |
| Control | Placebo comparator | No message or financial incentive Receives: Other: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vaccine booster
Received a booster vaccination within 2-weeks of message.
Measured: 2 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Dec 2022
- Study start8 Dec 2022
- Primary completion23 Dec 2022
- Study completion23 Dec 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Booster MessageStudies of the same condition, open and under way.
- More trials run by University of Southern CaliforniaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 57,893 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Southern California
- Sponsor type
- University, hospital or other
- Collaborators
- J-PAL North America
- Responsible party
- Principal investigator, Mireille Jacobson, University of Southern California
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05648773
- Sponsor's protocol ID
- UP-21-01097
- Status last verified
- Aug 2023
- First submitted
- 8 Dec 2022
- Last updated
- 14 Aug 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 14 Aug 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- COVID-19 Booster Incentives in a County-Run Health System
- ClinicalTrials.gov ID
- NCT05648773
- Acronym / sponsor ID
- UP-21-01097
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 57,893 participants (actual)
- Lead sponsor
- University of Southern CaliforniaUniversity, hospital or other
- Collaborators
- J-PAL North America
- Study start
- 8 Dec 2022 (actual)
- Primary completion
- 23 Dec 2022 (actual)
- Study completion
- 23 Dec 2022 (actual)
- First posted
- 13 Dec 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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 design
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Message Only | Experimental | Behavioral: MessagingEmail or SMS Booster Vaccination Reminder |
| Message + Financial Incentive | Experimental | Behavioral: Messaging, Behavioral: Financial IncentiveEmail or SMS Booster Vaccination Reminder + Offer of a financial incentive for getting boosted in the next 2 weeks. |
| Control | Placebo comparator | Other: PlaceboNo message or financial incentive |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- 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
Key exclusion criteria (1 listed)
- 1. Opt-out of health system messaging
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| MessagingBooster reminder message | Behavioural | Message + Financial Incentive, Message Only |
| Financial IncentiveFinancial Incentive for getting boosted within 2-weeks of the message | Behavioural | Message + Financial Incentive |
| PlaceboTreatment as usual; no additional message and no incentive. | Other | Control |
Primary outcome
Vaccine booster
Time frame: 2 weeks
Received a booster vaccination within 2-weeks of message.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Aug 2023.
- Individual participant dataSharing planned: Yes
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Messaging and Financial Incentive in people with Booster Message and Booster Message + Financial Incentive, run by University of Southern California at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Aug 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Vaccine booster (time frame: 2 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Aug 2023.