Jessica Chubak

Affiliate Professor, Epidemiology



PhD Epidemiology, University of Washington, 2007
MBHL Bioethics and Health Law, University of Otago, 2002



Kaiser Permanente Washington
1730 Minor Avenue, Suite 1600
Seattle, WA 98101


I am an epidemiologist with broad interests across the cancer care continuum. As a Senior Scientific Investigator at Kaiser Permanente Washington Health Research Institute (KPWHRI), I lead and participate in studies of cancer screening and outcomes. I have experience working in large research networks and with automated data, chart review, and patient-reported outcomes.

Research Interests

Her primary areas of research interest are in epidemiologic methods, cancer prevention and control, and pharmacoepidemiology.

Recent Publications (PubMed)

Core concepts in pharmacoepidemiology: Violations of the positivity assumption in the causal analysis of observational data: Consequences and statistical approaches.
(2021 Aug 10)
Pharmacoepidemiol Drug Saf
Zhu Y, Hubbard RA, Chubak J, Roy J, Mitra N

Characterizing Bias Due to Differential Exposure Ascertainment in Electronic Health Record Data.
(2021 Sep)
Health Serv Outcomes Res Methodol 21(3): 309-323
Hubbard RA, Lett E, Ho GYF, Chubak J

Letter: The Choice of Control Conditions in Animal-Assisted Intervention Research.
(2021 Jan-Dec)
Integr Cancer Ther 20(): 15347354211025626
Chubak J, Hawkes R, Dudzik C, Ziebell RA, Sherman KJ

A Centralized Program with Stepped Support Increases Adherence to Colorectal Cancer Screening Over 9 Years: a Randomized Trial.
(2021 May 28)
J Gen Intern Med
Green BB, Anderson ML, Cook AJ, Chubak J, Fuller S, Meenan RT, Vernon SW

Identifying breast cancer recurrence histories via patient-reported outcomes.
(2021 Apr 14)
J Cancer Surviv
Beatty JD, Sun Q, Markowitz D, Chubak J, Huang B, Etzioni R

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In the News

Pet Therapy Project Serves as Crowdfunding Guinea Pig
Group Health Research News, 08/29/2013
Colon Cancer Screening Doubles Using e-Health Records
Annals of Internal Medicine, 03/05/2013