Andrea J. Cook, PhD

“Our group is tackling major challenges in biostatistical research such as how to rigorously analyze data from pragmatic clinical trials so that results can be applied to improve patient care.”

Andrea J. Cook, PhD

Group Health Research Institute Associate Investigator


Andrea Cook’s methodological experience is advanced and diverse. Her statistical research spans randomized controlled trials (RCTs), longitudinal data analysis, spatial statistics, survival analysis, and multi-level data analysis applied across an equally broad range of health care topics.

Dr. Cook completed her biostatistics training at Harvard School of Public Health in 2005. Since joining Group Health Research Institute (GHRI), she has continued important work on methods for spatial cluster detection—a new way to analyze all data outcomes. Much of her other research focuses on developing methods for longitudinal and correlated data, with application in areas such as breast cancer screening, obesity control and prevention, emergency resuscitation, alternative medicine, and vaccine safety. She joins GHRI biostatistician Jennifer Nelson, PhD, as a key contributor to projects funded through the Vaccine Safety Datalink (VSD), including a nationwide, rapid-cycle analysis of vaccine-related adverse events. Using spatial statistics to develop methods for disease surveillance is another of her core research interests.

At GHRI, Dr. Cook has also gained extensive experience in statistical oversight of RCTs for safety. She is a member of the American Statistical Association and an affiliate associate professor in biostatistics at the University of Washington.

Research interests and experience

Recent publications

Aggarwal A, Cook AJ, Jiao J, Seguin RA, Vernez Moudon A, Hurvitz PM, Drewnowski A.

Access to supermarkets and fruit and vegetable consumption.

Am J Public Health. 2014 Mar 13 [Epub ahead of print]. PubMed

Aggarwal A, Monsivais P, Cook AJ, Drewnowski A.

Positive attitude toward healthy eating predicts higher diet quality at all cost levels of supermarkets.

J Acad Nutr Diet. 2014 Feb;114(2):266-72. doi: 10.1016/j.jand.2013.06.006. Epub 2013 Aug 2.

Cook AJ, Gold DR, Li Y.

Spatial cluster detection for longitudinal outcomes using administrative regions.

Commun Stat Theory Methods. 2013;42(12):2105-17.

Jackson SL, Cook AJ, Miglioretti DL, Carney PA, Geller BM, Onega T, Rosenberg RD, Brenner RJ, Elmore JG.

Are radiologists' goals for mammography accuracy consistent with published recommendations?

Acad Radiol. 2012 Mar;19(3):289-95. Epub 2011 Nov 30. PubMed