Public Health Sciences Division, Fred Hutch
Dr. Chongzhi Di is a biostatistician who collaborates with researchers who study a variety of health issues including schizophrenia, cardiovascular disease, sleep and personality, and psychiatric disorders. He has a particular interest in mobile-health tools that are being used with increasing frequency in health care and biomedical research. As a biostatistician, Dr. Di focuses on the analysis of functional and longitudinal data, statistical inference for complex models, and their application in physical activity epidemiology and other mobile-health studies. Motivated by ancillary studies of the Women’s Health Initiative, Dr. Di and his colleagues have been developing cutting-edge statistical methods for accelerometer-measured physical activity data, including novel metrics for activity intensity, frequency and duration, as well as flexible functional data analysis and compositional analysis tools for quantifying dose-response relationships between activity patterns and health outcomes. He has also been involved in other mobile-health studies that utilize mobile apps and wearable devices for improved measurement, monitoring and intervention, including smartphone-based behavior interventions and a wearable electrocardiogram monitoring patch for assessment of cardiac rhythm abnormalities.
Ph.D., Johns Hopkins University, Biostatistics, 2009.
B.Sc., Peking University, Applied Mathematics, 2003.
Statistical inference, functional and longitudinal data analysis, latent variable models, nonparametric and semiparametric regressions