Dr. Chengjie Xiong’s research interests include: novel statistical design of experiments and clinical trials, linear and nonlinear mixed models, longitudinal data analysis, survival analysis and reliability, diagnostic accuracy, advanced meta analysis, categorical data analysis, order restricted statistical inferences, and their applications in medicine, public health, biology, education and engineering.

Dr. Xiong has been very active in interdisciplinary research and has provided statistical consulting for academia, private industries and government agencies across the country in the areas of biology, medicine, clinical trials, agriculture, marketing and education. He currently directs the Biostatistics Cores for several NIH-funded projects in aging and Alzheimer’s disease including Washington University’s Alzheimer’s Disease Research Center, Healthy Aging and Senile Dementia, Antecedent Biomarkers for AD: The Adult Children Study, and Dominantly Inherited Alzheimer Network. He is also serving as the biostatistician and Biostatistics Core director of the DIAN Therapeutic Trial Unit.