726,199
Participants
Start Date
September 13, 2022
Primary Completion Date
May 15, 2023
Study Completion Date
November 14, 2023
Traditional Letter
Patients receive a traditional letter.
Direct to Patient Message
Patients receive a direct to patient message via the portal.
Chatbot
Patients are contacted by a chatbot via the portal.
Banner
Patients are exposed to a banner ad via the portal.
Yale University, New Haven
Food and Drug Administration (FDA)
FED
Yale University
OTHER