He has spent much of his career as an applied statistician collaborating with researchers in medicine and public health to address scientific questions with appropriate statistical methods. He has particular expertise in the analysis of longitudinal data. He serves as the Director for the Data Management and Biostatistics Core of the Boston University Alzheimer’s Disease and CTE Center (BU ADCTEC). Additionally, he directs the statistical analyses in multiple studies with researchers in medicine and public health to address issues of health disparities, especially among children.