The Impact of Theory-based Messaging on Covid-19 Vaccination Intentions

NCT ID: NCT04813770

Last Updated: 2021-05-10

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 1113 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-04-06
• Study Completion Date: 2021-04-26

Brief Summary

Uptake of vaccination against COVID-19 is key to controlling the pandemic. However, a significant proportion of people report that they do not intend to have a vaccine, often because of concerns they have about its side effects or safety. It is important to identify ways to communicate information about the vaccines that facilitate informed decisions rather than promoting uptake through coercion. This study will assess whether theory-based messages can change beliefs and increase intentions to receive a COVID-19 vaccine in Scotland. The messages will be based on publicly available information about the need for COVID-19 vaccination and the safety of the vaccines, and structured to address specific types of treatment beliefs. Participants will be randomised to either a group shown the messages or a control group shown general information messages about the COVID-19 virus and vaccination programme. By comparing the two groups we aim to test what impact the theory-based messages have on intentions and beliefs about COVID-19 vaccination.

Conditions

Vaccination; Covid19

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: HEALTH_SERVICES_RESEARCH
• Blinding Strategy: SINGLE

Study Groups

Theory-based messages

Theory-based health messages about COVID-19 and COVID-19 vaccination, the necessity of COVID-19 vaccination to oneself and others, and COVID-19 vaccine regulatory approval processes. These messages are based on publicly available information and are hypothesised to increase perceived necessity and reduce concerns about vaccination, and target known barriers to vaccine uptake.

Group Type: EXPERIMENTAL

Theory-based messages

Intervention Type: BEHAVIORAL

COVID-19 vaccination information structured to address vaccination necessity and concerns.

General messages

General messages about the COVID-19 virus and the vaccination programme. These messages do not target necessity and concerns, but are anticipated to promote understanding of the pandemic.

Group Type: ACTIVE_COMPARATOR

General messages

Intervention Type: BEHAVIORAL

General messages about the COVID-19 virus and the vaccination programme.

Interventions

Theory-based messages

COVID-19 vaccination information structured to address vaccination necessity and concerns.

Intervention Type: BEHAVIORAL

General messages

General messages about the COVID-19 virus and the vaccination programme.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Willing and able to give informed consent for participation in the trial
• Aged 18 years or above
• Resident in Scotland

Exclusion Criteria

• Received at least one COVID-19 vaccination dose

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Glasgow

OTHER

Sponsor Role: lead

Responsible Party

Katie Robb

Reader

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Katie Robb

Role: PRINCIPAL_INVESTIGATOR

University of Glasgow

Locations

University of Glasgow

Glasgow, , United Kingdom

Countries

United Kingdom

References

Young B, Kotzur M, Gatting L, Bonner C, Ayre J, McConnachie A, Batcup C, McCaffery K, O'Carroll R, Robb KA. The impact of theory-based messages on COVID-19 vaccination intentions: a structured summary of a study protocol for a randomised controlled trial. Trials. 2021 Apr 29;22(1):311. doi: 10.1186/s13063-021-05277-7.

Reference Type: DERIVED

PMID: 33926540 (View on PubMed)

Other Identifiers

200200052

Identifier Type: -

Identifier Source: org_study_id