Journal
STATISTICS IN MEDICINE
Volume 35, Issue 30, Pages 5730-5735Publisher
WILEY
DOI: 10.1002/sim.7059
Keywords
prevalence odds ratio; prevalence ratio; odds ratio; risk ratio; association
Categories
Funding
- University of Alabama at Birmingham Center for AIDS Research an NIH [P30 AI027767]
- University of Alabama at Birmingham Center for AIDS Research an NIH NIAID
- University of Alabama at Birmingham Center for AIDS Research an NIH NCI
- University of Alabama at Birmingham Center for AIDS Research an NIH NICHD
- University of Alabama at Birmingham Center for AIDS Research an NIH NHLBI
- University of Alabama at Birmingham Center for AIDS Research an NIH NIDA
- University of Alabama at Birmingham Center for AIDS Research an NIH NIMH
- University of Alabama at Birmingham Center for AIDS Research an NIH NIA
- University of Alabama at Birmingham Center for AIDS Research an NIH FIC
- University of Alabama at Birmingham Center for AIDS Research an NIH OAR
- NHLBI [K23HL126570]
Ask authors/readers for more resources
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 (c) 2016 John Wiley & Sons, Ltd.
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