COVID-19 vaccine misinformation contributed to vaccine hesitancy and preventable illness. This study tested whether a brief online game helps Canadian adults identify COVID-19 vaccine misinformation, and whether effects last one month. In the game, participants judged whether statements about COVID-19 vaccines were true or false and immediately received the correct answer with a brief evidence-based explanation, delivered in a game-like format with points, ranks, and feedback. Adults from a national non-probability online panel (n = 4,071) were randomized to the game, to the identical corrective content presented as a static blog post, or to a no-activity control. The game and blog groups were assessed immediately after the activity; all three groups were reassessed approximately one month later. The hypothesis was that gamified corrective information would produce more accurate knowledge than the same information presented as a static blog post and, at one month, than no activity. The primary outcome was accuracy in identifying true and false claims; vaccination intention, vaccine confidence, and self-reported vaccination were secondary outcomes. This is the fourth study in a research program whose first three trials are registered in a companion record.
Age range
18 Years
Sex
ALL
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Mean Knowledge Accuracy Score - Immediate
Timeframe: Immediately post-intervention, Day 1 (Game and Text arms only; the Control arm has no immediate assessment by design)
Mean Knowledge Accuracy Score - One Month
Timeframe: Approximately 1 month post-intervention (Wave 2), all arms.