Yiyi Chen is an associate professor of biostatistics at the School of Public Health. Her primary areas of expertise include statistical methods in clinical trials, adaptive design, Bayesian method, decision theory and computational statistics. She has been heavily involved with research projects through the Biostatistics Shared Resource of the OHSU Knight Cancer Institute and the Oregon Clinical and Translational Research Institution for over eight years. During that time, she has collaborated with investigators on grant applications, study designs, randomizations, data analyses and manuscript developments.

Chen has taught five courses in statistics over the years at OHSU and has independently developed an online biostatistics course – Statistical Methods in Clinical Trials – which has become a required course for all students in the biostatistics program. She also is a member of the Curriculum Committee of Biostatistics at the School of Public Health.