RT Journal Article SR Electronic T1 From crisis to opportunity in a big data study: Barriers and facilitators in a National Web-Based COVID-19 surveillance study JF The Annals of Family Medicine JO Ann Fam Med FD American Academy of Family Physicians SP 2680 DO 10.1370/afm.20.s1.2680 VO 20 IS Supplement 1 A1 Price, Andrea A1 Tapp, Hazel A1 Leonidas, Marina A1 Lu, Lauren YR 2022 UL http://www.annfammed.org/content/20/Supplement_1/2680.abstract AB Context: In March 2020 a COVID-19 Community Research Partnership (CRP) surveillance study was launched. We describe the barriers and facilitators to recruitment and retention during enrollment of >12,000 participants.Objective: To describe the barriers and facilitators to recruitment and retention while collecting daily syndromic and serologic data in a virtual setting.Methods: Key communication strategies designed to proactively enhance participation and retention were: Set up of a study call center; FAQs were emailed to participants and placed on the study webpage; preemptive messaging for getting started after enrollment, updating addresses, and in-home testing were designed; Later setup of a central call center for National team; design and implementation of national messaging for large scale in-home serological testing.Setting and Participants: Healthcare System linked to Six other National study sites. Healthcare system employees and patients, North Carolina residents and bordering counties. Atrium enrolled >12,000 participants, with over 65,000 participants enrolled nationally.Results: Key barriers: missing email communications, incorrectly entered participant information, participant fatigue due to longevity of study, use and return of serology kits. Facilitators: developing appropriate tailored messaging, preemptive communication for pending and failed validations, and development of “Unsubscribe” or “Paused” statuses. Proactive strategies kept the “Pending” enrollment below 10% and “Failed Validation” below 1% of total enrollees. The “Unsubscribe” option allowed withdraw rates to stay below 1% while the unsubscribe rate stayed below 10%. Tailored messaging supported the return of ~79% of test kits with ~43% of missing kits recovered.Conclusions: Large participant enrollment and data accrual resulted in the need for creative approaches to trouble shooting “big data” challenges associated with the rapid start-up of a high enrolling COVID -19 surveillance study. Preemptive messaging and anticipating participants’ needs enhanced enrollment, participation and retention.