Predictive probability of serum prostate-specific antigen for prostate cancer: an approach using Bayes rule.

Published

Journal Article

This article introduces the use of Bayes probability rule to calculate age and serum prostate-specific antigen (PSA)-specific positive predictive values (PPVs) for prostate cancer. The PPV is the conditional probability of having prostate cancer, given a value of PSA and a particular age group. The formulation uses values of sensitivity obtained from previously reported studies of more than 2,700 men with prostate cancer, and it uses values of specificity obtained from previously reported studies of more than 99,000 men without prostate cancer. The formulation also introduces the use of a population-based and age-specific probability of prostate cancer, and for this it relies on the National Cancer Institute-sponsored Surveillance, Epidemiology and End Results data. The Bayes PPV suggests that in younger men, cut points defining an elevated PSA level should be raised rather than lowered. The Bayes formulation also provides estimates of the PPV for narrow intervals of PSA, and these tabulated results may provide useful guidelines for the implications of serum PSA levels at specific age groups.

Full Text

Duke Authors

Cited Authors

  • Vollmer, RT

Published Date

  • March 2006

Published In

Volume / Issue

  • 125 / 3

Start / End Page

  • 336 - 342

PubMed ID

  • 16613336

Pubmed Central ID

  • 16613336

International Standard Serial Number (ISSN)

  • 0002-9173

Language

  • eng

Conference Location

  • England