19,554
Participants
Start Date
April 29, 2021
Primary Completion Date
June 4, 2021
Study Completion Date
July 6, 2021
Opt-In (Call-Back)
Messaging will include a prompt to agree to scheduling. If patient agrees, the access center will call these patients back to schedule, calling up to 3 times.
Opt-in (In-Bound)
Messaging will include a prompt to agree to scheduling followed by a prompt to call the Penn Medicine Vaccine Scheduling Hotline to schedule their vaccine appointment.
Standard Message
The message describes that the patient is eligible for the COVID vaccine.
Clinician Endorsement
The message will describe an endorsement from the provider to get the vaccination.
Scarcity
The message will highlight the limited availability and the elevated priority for the patient to receive the vaccine at Penn Medicine.
Opt-Out Framing
This will highlight that a vaccine is reserved for the patient, implying that they need to opt-out.
Phone Call
The access center will call these patients to schedule their vaccine appointment. These patients will not receive text messaging.
Hospital of the University of Pennsylvania, Philadelphia
University of Pennsylvania
OTHER