Roland Matsouaka, PhD, leads the Outcomes component for O2E. He is a member of the Duke Clinical Research Institute and an associate professor in the Duke Department of Biostatistics and Bioinformatics. His statistical interests include nonparametric, semiparametric, and causal inference methods for comparative effectiveness studies (for clinical trials affected by non-compliance and observational studies). He develops principled statistical methods that make the best use of the data, minimize bias, and ensure fair assessments. He has collaborated with clinical investigators on a wide range of projects to better understand and treat cardiovascular diseases while finding ways to improve racial equity in access to care. As a member of the DCRI's Outcomes Research Group, he has led the statistical analyses of large registry data, including the Society of Thoracic Surgeons (STS) National Database, the STS and American College of Cardiology (ACC) Transcatheter Valve Therapy (TVTR) Registry, and the American Heart Association/American Stroke Association Get With The Guidelines (GTWG) Registry.