Palm 2021.

Study characteristics
Methods	Study design: randomised online experiment Type of publication: journal publication Setting and dates: online survey platform, August 2020 Country: USA Language: English
Interventions	Message in short article format on COVID‐19 vaccines were manipulated in the following conditions: Safe and effective condition Unsafe and ineffective condition  Willing condition Unwilling condition Agenda condition Trump condition Control condition: no information
Population	Population: US residents Age; mean (SD): NR Gender: 55% Female, 45% Male Ethnicity: 66.3% White, 17.1% African American, 9.4% Asian American, 4.8% Hispanic, 2.3% other Number of participants (recruited/allocated/evaluated): 1123 Inclusion/exclusion criteria: US residents who had successfully completed at least 100 tasks and had at least a 95% approval rating on MTurk
Outcomes	Willingness to get vaccinated
Notes	Funding: NR COI: none