The impact of theory-based messages on COVID-19 vaccination intentions: a structured summary of a study protocol for a randomised controlled trial

This study will assess the impact of theory-based messages on COVID-19 vaccination intention, drawing on the Necessity-Concerns framework to address previously reported beliefs and concerns about COVID-19 vaccination, and assess whether hypothesised variables (illness coherence, perceived necessity and concerns) mediate change in vaccination intention.Trial designProspective, parallel two-arm, individually randomised (1:1) trial.ParticipantsAdults aged over 18 years, living in Scotland and not vaccinated for COVID-19. A quota sampling approach will be used with the aim of achieving a nationally representative sample on gender, region and ethnic group, with oversampling of individuals with no educational qualifications or with only school-level qualifications.Intervention and comparatorIntervention: Brief exposure to online text and image-based messages addressing necessity beliefs and concerns about COVID-19 vaccination.Comparator: Brief exposure to online text and image-based messages containing general information about COVID-19 and COVID-19 vaccination.Main outcomesPrimary outcome: Self-reported intention to receive a vaccine for COVID-19 if invited, immediately post-intervention. Secondary outcomes: Self-reported COVID-19 illness coherence, perceived necessity of a COVID-19 vaccine and concerns about a COVID-19 vaccine, immediately post-intervention.RandomisationQuasi-randomisation performed automatically by online survey software, by creating a variable derived from the ...
Source: Trials - Category: Research Source Type: clinical trials