Odds ratio

odds ratio

(Science: epidemiology) A comparison of the presence of a risk factor for disease in a sample of diseased subjects and non diseased controls. The number of people with disease who were exposed to a risk factor ( I.e. ) over those with disease who were not exposed ( Io ) divided by those without disease who were exposed ( ne ) over those without who were not exposed ( no ). Thus OR=(I.e./Io)/(Ne/No)= I.e. No / Io Ne. This measure should be used for case control studies where we retrospectively look at risks in those with and without disease. Also known as exposure odds ratio.

Retrieved from "http://www.biology-online.org/bodict/index.php?title=Odds_ratio&oldid=39504"
First | Previous (Odds) | Next (Odontalgia) | Last
Please contribute to this project, if you have more information about this term feel free to edit this page.