An interventional study of abstract vs concrete texts in Vaccine Hesitancy, sponsored by University of Bari Aldo Moro. Completed at 1 site in Italy. Open to participants aged 18 Years to 64 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-10-17.
Sponsored by University of Bari Aldo Moro · Not applicable, Interventional, and Other
COVID-19 vaccine hesitancy can be observed at different rates in different countries. 1,068 people were surveyed in France and Italy to inquire about individual potential acceptance, focusing on time preferences, in a risk-return framework: having the vaccination today, in a month, and in 3 months; perceived risks of vaccination and COVID-19; and expected benefit of the vaccine. A randomized controlled trial was conducted to understand how everyday stimuli, such as fact-based news about vaccines, impact on audience acceptance of vaccination. The main experiment involved two groups of participants and two different articles about vaccine-related thrombosis taken from two Italian newspapers. One article used a more abstract description and language, and the other used a more anecdotical description and concrete language; each group read only one of these articles. Two other groups were assigned categorization tasks; one was asked to complete a concrete categorization task and the other an abstract categorization task.
The goal of this RCT is to learn how journalistic news can affect vaccine hesitancy. 2 cohorts of unvaccinated individual, one Italian, one French. 5 arms design:
Research questions:
i) Does a more abstract vs concrete language increase the willingness to receive the vaccine? ii) Does a more abstract vs concrete mindset increase the willingness to receive the vaccine? iii) Is a gender effect detectable?
121 studies on the registry are indexed under Vaccination Hesitancy; 14 are open to participants now.
This study's enrollment of 1,068 is above the median of 516 across 98 interventional studies indexed under Vaccination Hesitancy.
Browse Vaccination Hesitancy studies →University of Bari Aldo Moro is the lead sponsor of 30 studies on the registry; 13 are open to participants now.
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unvaccinated individuals
Exclusion Criteria:
vaccinated individuals
Italian and French unvaccinated cohorts (n= 164; n=163)
Other: abstract vs concrete texts
Italian and French unvaccinated cohorts (n=155; n=153)
Other: abstract vs concrete texts
Italian and French unvaccinated cohorts (n=54; n=55)
Other: abstract vs concrete texts
Italian and French unvaccinated cohorts (n=55; n=56)
Other: abstract vs concrete texts
Italian and French unvaccinated cohorts (n=103; n=110)
Other: abstract vs concrete texts
The main experiment involved two groups of participants and two different articles about vaccine-related thrombosis taken from two Italian newspapers. One article used a more abstract descriptive style and language, while the other used a more anecdotical style and concrete language: each group read only one of these articles. Both articles are the same length and describe an episode of vaccine-related thrombosis. The abstract text uses a more formal and impersonal language, reporting more scientific considerations; the concrete text uses a more familiar and emotional style and provides a more anecdotical description of the case. Texts were also weighted according to a concreteness semantic vocabulary. French received translated versions.Two other groups were assigned categorization tasks; one was asked to complete a concrete categorization task and the other an abstract categorization task.
Also known as: abstract vs concrete tasks
vaccine hesitancy; number of participants accepting the vaccination
revealed preferences
Time frame: same day
Plan to share: No — No personal data have been collected. Individual responses to the questionnaire will be shared without personal information of respondents on a public repository.
Ran from Jun 2021 to primary completion in Jun 2021, 0 months.
Of 82 non-industry interventional studies with no phase under Vaccination Hesitancy, half reached primary completion within 6 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 14. This study's 0 months is below that.
Counting every sponsor, half of 83 studies reached it within 5 months; a quarter within 2 and three quarters within 14.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Oct 2022. You cannot join it, but the record below documents what was studied.
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University of Bari Aldo Moro