Factors Associated With Enrollment to a Decentralized Study.

Objective: To assess whether the mode and formatting of invitations affect enrollment in a large, decentralized study.

Patients And Methods: Between July 1, 2022, and October 30, 2022, we prospectively compared various approaches to enroll patients in the Tapestry DNA Sequencing Research Study, a decentralized exome-sequencing study. In phase 1, patients were randomized to receive invitations via the electronic health record (EHR) patient portal or email (cohort 1, 69,852 patients).