The Impact of Theory-based Messaging on Covid-19 Vaccination Intentions
- Conditions
- VaccinationCovid19
- Interventions
- Behavioral: General messagesBehavioral: Theory-based messages
- Registration Number
- NCT04813770
- Lead Sponsor
- University of Glasgow
- 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.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 1113
- Willing and able to give informed consent for participation in the trial
- Aged 18 years or above
- Resident in Scotland
- Received at least one COVID-19 vaccination dose
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description General messages 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. Theory-based messages 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.
- Primary Outcome Measures
Name Time Method Covid-19 vaccination intention measured by a single item and aggregated as the proportion of intenders. Immediately post-intervention Participants will be asked: "If you were invited to have a COVID-19 vaccination would you take the vaccine?" Those responding "yes, probably" or "yes, definitely" will be treated as intenders. Those responding "don't know", "probably not" or "definitely not" will be treated as non-intenders.
- Secondary Outcome Measures
Name Time Method Mean perceived necessity score as assessed by the BMQ Immediately post-intervention Self-reported perceived necessity of a COVID-19 vaccine as assessed by the Specific-Necessity subscale of the Beliefs about Medicines Questionnaire (BMQ), with a minimum score of 5, a maximum score of 25 and a higher score representing greater perceived necessity of a COVID-19 vaccine.
Mean COVID-19 illness coherence score as assessed by the IPQ-R Immediately post-intervention Self-reported COVID-19 illness coherence as assessed by the the illness coherence subscale of the revised Illness Perception Questionnaire (IPQ-R), with a minimum score of 5, a maximum score of 25 and a higher score representing greater personal understanding of COVID-19.
Mean perceived concerns score as assessed by the BMQ Immediately post-intervention Self-reported perceived concerns about a COVID-19 vaccine as assessed by the Specific-Concerns subscale of the Beliefs about Medicines Questionnaire (BMQ), with a minimum score of 5, a maximum score of 25 and a higher score representing greater perceived concerns about a COVID-19 vaccine.
Trial Locations
- Locations (1)
University of Glasgow
🇬🇧Glasgow, United Kingdom