Alliance for Pandemic Preparedness

April 15, 2021

Behavioral Nudges Increase COVID-19 Vaccinations Two Randomized Controlled Trials

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  • [Pre-print, not peer-reviewed] Text-based behavioral nudges increased COVID-19 appointment and vaccination rates by 86% and 26%, respectively, in a randomized controlled trial conducted in patients from the University of California Los Angeles Health system (n > 110,000). In the experimental group, receiving text messages, including ownership messages (e.g “claim your dose”) increased the efficacy of the intervention, while including video-based information to address vaccine hesitancy did not yield additional benefits. In a second trial among participants who had not made first-dose appointments 8 days after the first trial (n> 90,000), repeating the text-based intervention increased appointment and vaccination rates by 52% and 16%, respectively.

Dai et al. (Apr 14, 2021). Behavioral Nudges Increase COVID-19 Vaccinations Two Randomized Controlled Trials. Pre-print downloaded Apr 15 from https://doi.org/10.1101/2021.04.12.21254876