Liam OBrien

Liam O'Brien's expertise is broadly in the areas of biostatistics and epidemiology.  He provides a wide array of biostatistical support for researchers in the medical and public health fields.  His statistical methodological interests are in longitudinal data particularly as they relate to applications in psychiatric epidemiology and maternal and child health. Liam also has an interest in psychometric applications and methods.  

Liam received his doctoral degree in biostatistics from the Harvard School of Public Health.  He also holds bachelor of science degrees in engineering physics and mathematical sciences from the Colorado School of Mines. His primary appointment is Associate Professor of Statistics at Colby College in Waterville, Maine.

Liam's collaborative research career began in neuroimaging in 2000, when he served as a project biostatistician for the Massachusetts Mental Health CenterÕs program in schizophrenia.  He has since continued collaborative research with autism researchers at Massachusetts General Hospital. He began working in the public health field in Maine in 2003, consulting for the Maine Center for Public Health. Since then he has worked on a wide variety of projects in collaboration with the Maine Center for Disease Control and Prevention, the Muskie School of Public Policy, Eastern Maine Healthcare Systems, the Maine-Dartmouth Rural Residency Program, the University of Southern Maine, and the University of New England.


PhD, Biostatistics

Harvard University

BS, Engineering Physics

Colorado School of Mines

BS, Applied and Computational Mathematics

Colorado School of Mines

Board Certifications and Licenses

Professional Statistician, American Statistical Association




Current Research

I currently work on projects involving the evaluation of public health interventions.  I also am researching methods for permutation- or randomization-based testing when standard hypothesis testing assumptions are not met.

Research Interests

Longitudinal Data Analysis, Statistics in Epidemiology, Psychometrics

Liam O'Brien

Liam OBrien



Off Campus

(207) 859-5838

Teaching Online