Using Text Messages to Boost COVID-19 Vaccine Booking Rate

NCT ID: NCT05993260

Last Updated: 2023-08-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1825937 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-04-26

Study Completion Date

2021-05-10

Brief Summary

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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.

Detailed Description

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Conditions

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Vaccination Hesitancy COVID-19

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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Control

Received the text message "You are now eligible for your free NHS Covid-19 vaccine. Please book yours now at \[LINK\] or by calling 119."

Group Type ACTIVE_COMPARATOR

Control

Intervention Type BEHAVIORAL

Control vaccination eligibility reminder text message

Simple

Received the text message "You can now book your free NHS Covid-19 vaccine. Please book yours now at \[LINK\] or by calling 119."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Reserved

Received the text message "Your free NHS Covid-19 vaccine is waiting for you. Please book yours now at \[LINK\] or by calling 119."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Top of queue

Received 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."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Join the millions

Received 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."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Convenience

Received 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."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Protection against virus

Received 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."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Protect you and those close to you

Received 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."

Group Type EXPERIMENTAL

Behavioural science-informed text messages

Intervention Type BEHAVIORAL

Behaviourally-informed content in vaccination eligibility reminder text messages

Interventions

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Behavioural science-informed text messages

Behaviourally-informed content in vaccination eligibility reminder text messages

Intervention Type BEHAVIORAL

Control

Control vaccination eligibility reminder text message

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* (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.

Exclusion Criteria

* Participants with invalid phone numbers
Minimum Eligible Age

40 Years

Maximum Eligible Age

44 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Public Health England

OTHER_GOV

Sponsor Role collaborator

Department of Health and Social Care

UNKNOWN

Sponsor Role collaborator

NHS England

OTHER_GOV

Sponsor Role collaborator

The Behavioural Insights Team

OTHER

Sponsor Role lead

Responsible Party

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Hannah Behrendt

Director

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Hannah Behrendt, PhD

Role: PRINCIPAL_INVESTIGATOR

The Behavioural Insights Team

Locations

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NHS England

London, , United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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2021035

Identifier Type: -

Identifier Source: org_study_id

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