نبذة مختصرة : A nudge changes people’s actions without removing their options or altering their incentives. During the COVID-19 vaccine rollout, the Swedish Region of Uppsala sent letters with pre-booked appointments to inhabitants aged16–17 instead of opening up manual appointment booking. Using regional and municipal vaccination data, wedocument a higher vaccine uptake among 16- to 17-year-olds in Uppsala compared to untreated control regions(constructed using the synthetic control method as well as neighboring municipalities). The results highlight pre-booked appointments as a strategy for increasing vaccination rates in populations with low perceived risk.
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