Using Text Messages to Boost COVID-19 Vaccine Booking Rate
1 other identifier
interventional
1,825,937
1 country
1
Brief Summary
This study is a nationwide randomised controlled trial (RCT) to test the impact of behavioural science-informed text messages notifying patients of their eligibility for the COVID-19 vaccine on vaccination rates.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Apr 2021
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
April 26, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 29, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
May 10, 2021
CompletedFirst Submitted
Initial submission to the registry
August 11, 2023
CompletedFirst Posted
Study publicly available on registry
August 15, 2023
CompletedAugust 15, 2023
August 1, 2023
3 days
August 11, 2023
August 11, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Booking rate within 72 hours
The proportion of first dose vaccination appointments booked through the NHS National Booking System within 72 hours (inclusive) of the text message being sent
72 hours
Secondary Outcomes (1)
Vaccination rate within 14 days
14 days
Study Arms (8)
Control
ACTIVE COMPARATORReceived the text message "You are now eligible for your free NHS Covid-19 vaccine. Please book yours now at \[LINK\] or by calling 119."
Simple
EXPERIMENTALReceived the text message "You can now book your free NHS Covid-19 vaccine. Please book yours now at \[LINK\] or by calling 119."
Reserved
EXPERIMENTALReceived the text message "Your free NHS Covid-19 vaccine is waiting for you. Please book yours now at \[LINK\] or by calling 119."
Top of queue
EXPERIMENTALReceived the text message "You've reached the top of the queue and are a priority for getting a free NHS Covid-19 vaccine. Please book yours now at \[LINK\] or by calling 119."
Join the millions
EXPERIMENTALReceived the text message "You are now eligible for your free NHS Covid-19 vaccine. Join the millions who have already had theirs. Please book yours now at \[LINK\] or by calling 119."
Convenience
EXPERIMENTALReceived the text message "You are now eligible for your free NHS Covid-19 vaccine. Choose a time and place that suits you. Please book yours now at \[LINK\] or by calling 119."
Protection against virus
EXPERIMENTALReceived the text message "You are now eligible for your free NHS Covid-19 vaccine. Getting vaccinated is the best protection against coronavirus. Please book yours now at \[LINK\] or by calling 119."
Protect you and those close to you
EXPERIMENTALReceived the text message "You are now eligible for your free NHS Covid-19 vaccine. Getting the vaccine is the best way to protect yourself and those close to you against coronavirus. Please book yours now at \[LINK\] or by calling 119."
Interventions
Behaviourally-informed content in vaccination eligibility reminder text messages
Eligibility Criteria
You may qualify if:
- (i) satisfying the age criteria as defined above;
- (ii) recorded in the National Immunisation Management System (NIMS);
- (iii) with a valid mobile phone number;
- (iv) who had not already received or been invited for the COVID-19 vaccine via NIMS at the time of the study.
You may not qualify if:
- Participants with invalid phone numbers
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- The Behavioural Insights Teamlead
- Public Health Englandcollaborator
- Department of Health and Social Carecollaborator
- NHS Englandcollaborator
Study Sites (1)
NHS England
London, SE1 8UG, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Hannah Behrendt, PhD
The Behavioural Insights Team
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, CARE PROVIDER
- Purpose
- PREVENTION
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director
Study Record Dates
First Submitted
August 11, 2023
First Posted
August 15, 2023
Study Start
April 26, 2021
Primary Completion
April 29, 2021
Study Completion
May 10, 2021
Last Updated
August 15, 2023
Record last verified: 2023-08
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, ANALYTIC CODE
All data requests should be submitted to NHS England and NHS Improvement (the data controller) for consideration. Access to the raw anonymised data may be granted for non-commercial research at the discretion of NHS England and NHS Improvement. Further information can be obtained from the corresponding author at hannah.behrendt@bi.team. Custom code that supports the findings of this study is available from the corresponding author upon request.