Huang 2021.

Study characteristics
Methods	Study design: randomised controlled experiment Type of publication: journal article Setting and dates: online platform (Qualtrics), mid‐December 2020 Country: USA Language: English
Interventions	Framing Gain vs. loss High vs. low uncertainty National vs. local agency
Population	Population: general population, residents of the greater Houston Area Age; range: 18‐81 Gender: both Ethnicity: 52,4% Caucasians, 20, 2% Hispanics/Latinos, 19, 4% African American, 6,5% Asians & Pacific Islanders, 1,6% Multiracials or others Number of participants (recruited/allocated/evaluated): 408 recruited, 382 assessed Inclusion/exclusion criteria: residency of the greater Houston Area since March 2020
Outcomes	Vaccine intention Vaccine beliefs Perceived threat to freedom Psychological reactance Perceived message relevance
Notes	COI: NR Funding: University of Houston