Donald Hedeker, Ph.D., is a Professor of Biostatistics in the Department of Public Health Sciences at The University of Chicago.
Don's main expertise is in the development and dissemination of advanced statistical methods for clustered and longitudinal data. In addition to many methodological papers in these areas, Don has developed several freeware computer programs for statistical analysis of such data (MIXREG for normal-theory models, MIXOR for dichotomous and ordinal outcomes, MIXNO for nominal outcomes, and MIXPREG for counts). In 2008, with funding from an SBIR grant, these programs were restructured into the Supermix software program distributed by Scientific Software, Inc.
With Robert Gibbons, Don is the author of the text Longitudinal Data Analysis, published by Wiley in 2006. More recently, Don has developed methods for intensive longitudinal data, which are data with many measurements over time, often collected using mobile devices and/or the Internet. Such data are increasingly obtained by researchers in many research areas, for example in the areas of mobile health (mHealth) and ecological momentary assessment (EMA) studies. Don is recognized as a leader in the development of statistical methods for analysis of such data, and has recently published and developed the freeware MIXREGLS shareware computer program.
In terms of research funding, Don was a PI on R01 grants during the period 1996-2005 for work on mixed models from the National Institute of Mental Health (NIMH). During 2009-2012, Don was the PI of an R21 grant from the National Cancer Institute (NCI) to develop methods for analysis of intensive longitudinal data. In 2014, Don received funding for a 4-year R01 grant (Novel Statistical Models for EMA Studies) from the National Heart, Lung, and Blood Institute (NHLBI). Don is the PI of this grant, along with Genevieve Dunton, Ph.D., of the University of Southern California. Don is also the PI of the Data Management and Statistics core of the NCI program project “Social-Emotional Contexts of Adolescent Smoking,” which has been ongoing since 2004.
In 2000, Don was named a Fellow of the American Statistical Association, and he is an Associate Editor for Statistics in Medicine and Journal of Statistical Software.