Eric J Tchetgen Tchetgen is Professor of Biostatistics and Epidemiologic methods with joint appointment in the departments of Biostatistics and Epidemiology at the Harvard T.H. Chan School of Public Health. His primary area of interest is in semi-parametric efficiency theory with application to causal inference, missing data problems, statistical genetics and mixed model theory. In general, he works on the development of statistical and epidemiologic methods that make efficient use of the information in data collected by scientific investigators, while avoiding unnecessary assumptions about the underlying data generating mechanism. Recently, his research with collaborators has contributed new robust and efficient methods for mediation analysis, instrumental variable analysis, discovery of gene-environment interactions and selection bias due to missing data or truncation by death.
