Garrett Fitzmaurice

Professor in the Department of Biostatistics

Department of Biostatistics

Department of Biostatistics

115 Mill Street
McLean Hospital Laboratory for Psychiatric Biostatistics
Belmont, Massachusetts 02478
Phone: 617.855.3689

Other Affiliations

Professor of Psychiatry (Biostatistics), Harvard Medical School
Biostatistician, Division of General Medicine, Brigham & Women’s Hospital
Foreign Adjunct Professor of Biostatistics, Karolinska Institutet, Sweden


Dr. Fitzmaurice has research interests in a number of areas, including methods for analysing discrete longitudinal data, models for mixed discrete and continuous outcomes, general missing data problems, methods for detecting and adjusting for overdispersion, and statistical problems in psychiatric epidemiology.

A major focus of his research is on the development of statistical methodology for analysing discrete multivariate data. In particular, he has developed likelihood-based methods for analysing multivariate binary data arising from longitudinal studies. Recently, he has begun developing methods for handling non-ignorable dropouts in longitudinal clinical trials. Dr. Fitzmaurice has also conducted research on methods for simultaneously analysing mixed discrete and continuous outcomes. The substantive foci of this latter research has been to data from developmental toxicity studies.

Dr. Fitzmaurice’s research in psychiatric epidemiology has concentrated on methodological problems surrounding the use of multiple informant data in mental health surveys.

With colleagues Nan Laird and Jim Ware, Dr. Fitzmaurice published a bestselling textbook on Applied Longitudinal Analysis in 2004; the 2nd edition of this book was published August 2011.

With colleagues Marie Davidian, Geert Verbeke and Geert Molenberghs, Dr. Fitzmaurice has published an edited book on Longitudinal Data Analysis.


Sc.D., 1993, Harvard School of Public Health