Prevalence odds ratio versus prevalence ratio: choice comes with consequences

Academic Article


  • Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to report depending on the study design. However, the literature on selecting a particular category of the outcome to be modeled and/or change in reference group for categorical independent variables and the effect on statistical significance, although known, is scantly discussed nor published with examples. In this article, we provide an example of a cross-sectional study wherein prevalence ratio was chosen over (Prevalence) odds ratio and demonstrate the analytic implications of the choice of category to be modeled and choice of reference level for independent variables. Copyright © 2016 John Wiley & Sons, Ltd.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Tamhane AR; Westfall AO; Burkholder GA; Cutter GR
  • Start Page

  • 5730
  • End Page

  • 5735
  • Volume

  • 35
  • Issue

  • 30