ArticleBMJ public health2025
Effect of informational videos on vaccine perceptions among unvaccinated individuals: a randomised educational intervention.
Article in BMJ public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- The Effect of Communication on Childcare Utilization Intention Among Mothers of Children Under Three Years of Age: A Controlled Trial in China.Behavioral sciences (Basel, Switzerland) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
abstractIntroduction: By 2022, COVID-19 vaccine uptake in the USA had plateaued. We tested whether unvaccinated individuals in 2022 were wilfully avoiding vaccine information, or if they would voluntarily accept vaccine education. Methods: In this double-blind, parallel, randomised educational study, we recruited US residents to participate in an online survey-experiment between 27 January 2022 and 25 February 2022. Subjects were first screened for vaccination status. Unvaccinated individuals were then separately invited into the survey. We developed video-based informational interventions that provide detailed, yet easy-to-grasp, explanations of mRNA vaccine technology, development, testing and safety protocols, and potential side effects. Participants were randomised into three groups: (1) a control group who watched an unrelated placebo video, (2) a 'video-optional' group for whom every informational video was optional and (3) a 'video-required' group for whom the vaccine-technology video was mandatory, but all other videos were optional. Primary endpoints were future COVID-19 vaccine uptake intentions, COVID-19 vaccine efficacy beliefs and COVID-19 vaccine side-effect concerns (all measured on a 100-point scale). Secondary endpoints measured information-seeking behaviour and trust in healthcare professionals. Results: Relative to control (3014 participants), the video-optional group (1320 participants) exhibited a 0.09 standard deviation (95% CI 0.02 to 0.15) improvement in COVID-19 vaccine intentions, a 0.10 SD (95% CI 0.03 to 0.17) improvement in COVID-19 vaccine-efficacy beliefs, and a 0.14 SD (95% CI 0.07 to 0.21) improvement in COVID-19 side-effect concerns. The video-required group (2756 participants) yielded improvements, relative to control, of 0.07, 0.18 and 0.08 SDs in the respective categories (95% CIs 0.02 to 0.12, 0.13 to 0.23, 0.03 to 0.13). 55%-60% of the participants in both treatment groups watched optional videos. Conclusions: Wilful avoidance of vaccine information does not appear to explain entrenched vaccine hesitancy. Impartial and detailed information may be an effective communication and policy tool. Trial registration numbers: ISRCTN98065390 and American Economic Association Trial Registry (AEARCTR0008909).
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.