1998-2001 Principal Investigator, NSF Grant DMS 9803720 "Statistical Analysis of Longitudinal Studies and Surveys with Missing Values". 1999-2007 Director, Biostatistics and Data Management Core, NIA P50 AG08671 "Michigan Alzheimer's Disease Research Center". 2001-2004 Principal Investigator, NSF Grant DMS 0106914 "Bayesian Methodology for Disclosure Limitation and Statistical Analysis of Large Government Surveys". 2003- Director, Biostatistics Core, "Michigan Center for Health Communications Research