820
Participants
Start Date
November 12, 2020
Primary Completion Date
February 11, 2021
Study Completion Date
February 11, 2021
Facebook Ads on the importance of staying safe during the Thanksgiving / Christmas holiday
Facebook ads to show a 15 second video clip recorded by MGH, Harvard and Lynn Community health center and other health care professionals. The ads will be shown before the Thanksgiving/Christmas holiday and will focus on staying safe - limiting travel and mask-wearing. The investigators will randomize exposure to the ad campaign at the ZIP code or county level.
JPAL North America, Cambridge
Massachusetts Institute of Technology
OTHER
Harvard University
OTHER
Massachusetts General Hospital
OTHER
Yale University
OTHER
Stanford University
OTHER
National Bureau of Economic Research, Inc.
OTHER