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Impact of PSA Screening on the Incidence of Advanced Stage Prostate Cancer in the United States: A Surveillance Modeling Approach

Author

Listed:
  • Ruth Etzioni

    (Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, retzioni@fhcrc.org)

  • Roman Gulati

    (Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington)

  • Seth Falcon

    (Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington)

  • David F. Penson

    (Norris Cancer Center, University of Southern California, Los Angeles, California)

Abstract

Background and objective. Both the detection and the treatment of prostate cancer have undergone important clinical advances. Simultaneously, both distant stage incidence and disease-specific mortality have fallen in the United States. A recent study suggests that if prostate-specific antigen (PSA) testing explains the decline in distant stage incidence, then it may be largely responsible for the decline in mortality. The objective was to quantify this link between PSA screening and the decline in distant stage incidence. Methods. A fixed-cohort simulation model of prostate cancer progression and screening was adapted to a population-based model that integrates new data on trends in testing and biopsy practices. The model was calibrated to pre-PSA incidence and then screening was superimposed, obtaining incidence projections in the absence and presence of testing. This approach permits calculation of clinically relevant measures for model validation and direct assessment of the role of testing in the distant stage incidence decline. Results. The model validated well with prior studies of natural history, and the sensitivity analysis indicated that the findings were robust to variation in model parameters. Model results indicate that PSA screening accounts for approximately 80% of the observed decline in distant stage incidence. Conclusions. PSA screening contributed to the observed declines in distant stage incidence and mortality in the 1990s. However, additional factors, such as increasing awareness of prostate cancer and advances in treatment, have probably also played a role in these trends.

Suggested Citation

  • Ruth Etzioni & Roman Gulati & Seth Falcon & David F. Penson, 2008. "Impact of PSA Screening on the Incidence of Advanced Stage Prostate Cancer in the United States: A Surveillance Modeling Approach," Medical Decision Making, , vol. 28(3), pages 323-331, May.
  • Handle: RePEc:sae:medema:v:28:y:2008:i:3:p:323-331
    DOI: 10.1177/0272989X07312719
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    Cited by:

    1. Daniel Underwood & Jingyu Zhang & Brian Denton & Nilay Shah & Brant Inman, 2012. "Simulation optimization of PSA-threshold based prostate cancer screening policies," Health Care Management Science, Springer, vol. 15(4), pages 293-309, December.
    2. Jingyu Zhang & Brian T. Denton & Hari Balasubramanian & Nilay D. Shah & Brant A. Inman, 2012. "Optimization of Prostate Biopsy Referral Decisions," Manufacturing & Service Operations Management, INFORMS, vol. 14(4), pages 529-547, October.

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