This randomized controlled trial tested the effect of culturally tailored and standard electronic secure messages and mailings from patients' primary care physicians to encourage COVID-19 vaccination among adults aged 65 and older.
This randomized controlled trial tested the effect of culturally tailored and standard electronic secure messages and mailings from patients' primary care physicians to encourage COVID-19 vaccination among adults aged 65 and older. Patients who had not received a COVID-19 vaccination or appointment after previous outreach attempts were randomized to receive (a) an electronic secure message and/or mail outreach from their PCP, (b) similar outreach with additional culturally tailored content, or (c) usual care. The primary outcome was receipt of COVID-19 vaccination during the 8 weeks after the initial study outreach date.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
8,287
These patients were sent two study outreach messages. Study Outreach 1 was an electronic secure message sent on behalf of the PCP, encouraging COVID-19 vaccination and designed based on behavioral science principles. Letters were sent to patients who had not signed up for the electronic health record portal. Study Outreach 2 was a postcard sent to all patients who had not been vaccinated or made an appointment by four weeks after Study Outreach 1.
These patients were sent messages similar to those in Standard PCP Outreach, but with additional culturally tailored content and photos.
Kaiser Permanente Northern California
Oakland, California, United States
Days to COVID-19 vaccination
Days to COVID-19 vaccination
Time frame: During the 8 weeks after Study Outreach 1 was sent
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