Preliminary Outline of the Day 9 AM: Welcome, followed by DBEI Distinguished Faculty talks...Vincent Lo Re III, MD, MSCE (Epidemiology Division): "Risk of Arterial and Venous Thrombotic Events in Patients with COVID-19 Compared to Influenza: A Large-Scale Cohort Study Within the US FDA's Sentinel System"Graciela Gonzalez Hernandez, MS, PhD (Informatics Division): "Text Mining for Digital Epidemiology: Overcoming the Challenges of Dealing with Real World Data."10 AM: Ten flash talks illustrate the work behind our highest-ranked research gallery presentations.

Title: A flexible approach for the analysis of repeated attempt designsAbstract: It is not uncommon in follow-up studies to make multiple attempts to collect a measurement after baseline. Recording whether these attempts are successful or not provides useful information for the purposes of assessing the missing at random (MAR) assumption and facilitating missing not at random (MNAR) modeling. This is because measurements from subjects who provide this data after multiple failed attempts may differ from those who provide the measurement after fewer attempts.