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Ann Klassen, PhD

Ann Klassen

Community Health and Prevention
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BA, American Social History and German Language, Oberlin College; PhD, Behavioral Sciences and Health Education, Johns Hopkins University School of Hygience and Public Health


Dr. Klassen has an accomplished career in public health research and practice, with a wealth of experience in securing federal research grants, and a reputation as being a strong collaborator and mentor. Klassen's public health research has focused on the social determinants of chronic disease disparities, and the implementation and evaluation of individual and contextual interventions to reduce patterns of excess burden. Her methodologic expertise includes GIS-based and spatial analysis, as well as qualitative and mixed methods for social science research.

Klassen serves as a Professor of Community Health and Prevention. Previously, she was an Associate Professor of behavioral health sciences at The Johns Hopkins Bloomberg School of Public Health, with a joint appointment in Oncology at the Johns Hopkins School of Medicine.

Klassen has held funding from the National Institutes of Health (NIH), Centers for Disease Control and Prevention (CDC), Department of Defense’s Congressionally Mandated Medical Research Program, American Cancer Society and many other sources. She also directed graduate training programs funded by the National Cancer Institute and the Susan G Komen for the Cure.

Klassen is the author of more than 70 scientific articles and chapters, and currently is co-leading an expert group on mixed methods research for the Office of Behavioral and Social Science Research at the NIH. Other scientific service activities include NIH study section memberships, advising Breakthrough Britain on cancer research funding, and serving on the international steering committee for the 2007 Global Breast Cancer Conference in Seoul, Korea.

Klassen was also appointed to Maryland’s HPV Vaccine Policy Taskforce and Prostate Cancer Medical Advisory Committee, and chairs the Cervical Cancer Chapter of Maryland’s CDC-funded Comprehensive Cancer Plan.

Klassen received her bachelor’s degree from Oberlin College in history and German, and her PhD in Behavioral Sciences and Health Education from Johns Hopkins University.

Research Interests

  • Cancer
  • Community Based Participatory Research
  • Data Analysis Methods
  • GIS-based and spatial analysis
  • Environmental Exposures
  • Global Health
  • Immigrant Health
  • Health Communication
  • Health Disparities
  • Health Policy
  • Maternal and Child Health
  • Substance Abuse
  • Nutrition
  • Sexual Health
  • Urban Health
  • Mixed Methods
  • Qualitative Methods
  • Excess Burden Intervention


Klassen AC, Smith KC. The Enduring and Evolving Relationship between Social Class and Breast Cancer: A Review of the Literature. Cancer Epidemiology 2011;35(3):217-234.

Cohen SA, Ahmed S, Agree EM, Louis TA, Klassen AC, Naumova EN. Childhood Hib vaccination and pneumonia and influenza burden in US seniors. Vaccine 2010;28(28):4462-9

Smith KC, Kromm EK, Klassen AC. Print news coverage of cancer: What prevention messages are conveyed when screening is newsworthy? Cancer Epidemiology 2010;34(4):434-41.