Donald Hedeker, PhD., is a Professor of Biostatistics in the Department of Public Health Sciences at The University of Chicago. Don received his B.A. in Economics in 1980 and his Ph.D. in Quantitative Psychology, both from The University of Chicago. Don’s main expertise is in the development of methods for clustered and longitudinal data, with emphasis on mixed-effects models. With Robert Gibbons, Don is the author of the text “Longitudinal Data Analysis,” published by Wiley in 2006. He is also the primary author of several freeware computer programs for mixed-effects analysis. Don was named a Fellow of the American Statistical Association in 2000, and he is an Associate Editor for Statistics in Medicine since 2006.
February 7, 2020