Individual Study / Portland Kaiser Cohort Study

Portland Kaiser Cohort Study

Portland Kaiser Cohort Study

Initiatives -
The purpose of the project was to study the natural history of human papillomavirus HPV and the development of cervical intraepithelial neoplasia. *Note: All published information has been collected from the article referenced in the Marker Paper box below. Therefore, there may be variations with more advanced versions of the study.*
Start Year
Intramural Research Program of the National Institutes of Health,National Cancer Institute


Investigators Contacts
  • Dr. Mark Schiffman
    National Cancer Institute


Study design
Population cohort
Follow Up
Annual cytologic screening of women at Kaiser continued as part of standard clinical practice(the women were followed prospectively by routine cytology for a maximum of 18 years follow up)

Marker Paper

Schiffman, M., Glass, A. G., Wentzensen, N., Rush, B. B., Castle, P. E., Scott, D. R., Buckland, J., Sherman, M. E., Rydzak, G., Kirk, P., Lorincz, A. T., Wacholder, S., & Burk, R. D. (2011). A long-term prospective study of type-specific human papillomavirus infection and risk of cervical neoplasia among 20,000 women in the Portland Kaiser Cohort Study. Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 20(7), 1398–1409.


Sources of Recruitment
  • Individuals

Number of participants

Number of participants
Number of participants with biosamples
Supplementary Information
Non-pregnant women aged 16 and older


Availability of data and biosamples