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. 2022 Aug 3;2022(8):CD015270. doi: 10.1002/14651858.CD015270

Chen 2021.

Study characteristics
Methods 

  • Study design: randomised controlled experiment

  • Type of publication: journal publication

  • Setting and dates: online experiment, May 28 and June 24 in 2020

  • Country: China

  • Language: English
Interventions News article about the development of the COVID‐19 vaccine with the following variables manipulated: 

  • Message frames: gain vs. loss

  • Outcome uncertainty: certain vs. uncertain

  • Number format: frequency vs. percentage
Population 

  • Population: Chinese adults

  • Age; mean (SD): 24.70 (9.55)

  • Gender: 55.2% Male, 44.1% Female

  • Ethnicity: NR

  • Number of participants (recruited/allocated/evaluated): 413

  • Inclusion/exclusion criteria: NR
Outcomes

  • Attitudes towards getting vaccinated

  • Intention to get vaccinated against COVID‐19

  • Numeracy skills
Notes Funding: NR
COI: none declared