Vaccine intentions
Immediately after receiving the video information treatment, 75% of participants signaled their intention to get vaccinated (with an intracluster correlation coefficient of 0.15 (95% confidence interval (CI): 0.13, 0.18)). The placebo arm had the lowest vaccine intention rate of 71.0%. The health message arm had a slightly higher rate of 72.5% (difference from placebo: 1.5; 95% CI: −1.7, 4.7; 