Information Provision and Consistency Framing to Increase COVID-19 Booster Uptake

NCT05586178 | Completed

• 1 other identifier: covidbooster2
• Study Type: interventional
• Target: 177,720
• Locations: 1 country
• Sites: 1

Brief Summary

This study investigates different ways to elevate intentions to get the COVID-19 booster via text-based reminders, including providing information about the booster and leveraging the consistency principle. The proposed randomized controlled trial will examine the impact of these reminders on booster uptake.

Conditions

COVID-19; Vaccines

Keywords

COVID19; Vaccines; Text-messages; Patient Outreach; Behavioral Science; Information provision

Outcome Measures

Primary Outcomes (2)

• booster take-up in 2 weeks

  Whether people receive the bivalent booster at any location reporting to the California Immunization Registry (CAIR)

  2 weeks after getting the text message

• booster take-up in 4 weeks

  Whether people receive the bivalent booster at any location reporting to the California Immunization Registry (CAIR)

  4 weeks after getting the text message

Secondary Outcomes (1)

• Link click rate in 1 week

  1 week after getting the text message

Study Arms (7)

Holdout

NO INTERVENTION

Simple reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action

Consistency reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action; Behavioral: Consistency framing

Uniqueness information reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action; Behavioral: Information provision about the uniqueness of the bivalent booster

Eligibility information reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action; Behavioral: Information provision about bivalent booster eligibility

Severity information reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action; Behavioral: Information provision about the severity of COVID-19 symptoms

Consistency and uniqueness information reminder

EXPERIMENTAL

Behavioral: Reminder that facilitates action; Behavioral: Consistency framing; Behavioral: Information provision about the uniqueness of the bivalent booster

Interventions

Reminder that facilitates action BEHAVIORAL

Patients will receive a text message reminding them that they can now get the bivalent COVID-19 booster and facilitating action. The message will contain a link to schedule a booster appointment at UCLA Health and a link to vaccine.gov (where people can find local pharmacies that carry the bivalent booster).

Consistency and uniqueness information reminder; Consistency reminder; Eligibility information reminder; Severity information reminder; Simple reminder; Uniqueness information reminder

Consistency framing BEHAVIORAL

The message will leverage the psychological principle of consistency. It will highlight to patients that based on medical records, they have completed a COVID-19 vaccine primary series, have done a great job protecting their health, and can now get the bivalent booster.

Consistency and uniqueness information reminder; Consistency reminder

Information provision about the uniqueness of the bivalent booster BEHAVIORAL

The message will contain information about how the bivalent booster differs from previous doses patients have received and why it is valuable.

Consistency and uniqueness information reminder; Uniqueness information reminder

Information provision about bivalent booster eligibility BEHAVIORAL

The message will clarify to patients that regardless of whether they are at high risk, received the original boosters, or previously got COVID-19, they are eligible for the bivalent booster based on their medical records, and the updated booster will be valuable for them.

Eligibility information reminder

Information provision about the severity of COVID-19 symptoms BEHAVIORAL

The message will contain information about the often underestimated chances of people developing severe or long-lasting COVID-19 symptoms. The message will also mention that the bivalent booster can reduce such chances.

Severity information reminder

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patients aged 18 or above
• Have a mobile phone number or SMS-capable phone number in UCLA Health's database
• Having completed a COVID-19 vaccine primary series based on CAIR data
• Last COVID-19 vaccine shot (including booster shot) occurred at least two months before the date when patient list are pulled in preparation for the trial, based on CAIR data. The last two criteria meant to identify patients who are eligible for the updated booster.

You may not qualify if:

• Patients who have received the bivalent booster anywhere (based on CAIR data) before the day they receive the text message
• Patients who have already scheduled appointments at UCLA Health for getting the bivalent booster before the day they receive the text message

Sponsors & Collaborators

• University of California, Los Angeles: lead

Study Sites (1)

UCLA Health Department of Medicine, Quality Office

Los Angeles, California, 90095, United States

Location

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, Viral; Pneumonia; Respiratory Tract Infections; Infections; Virus Diseases; Coronavirus Infections; Coronaviridae Infections; Nidovirales Infections; RNA Virus Infections; Lung Diseases; Respiratory Tract Diseases

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, CARE PROVIDER
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: October 17, 2022
• First Posted: October 19, 2022
• Study Start: October 18, 2022
• Primary Completion: December 31, 2022
• Study Completion: December 31, 2023
• Last Updated: December 5, 2024

Record last verified: 2024-12

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)