data item odds ratio STATO_0000182 Yongqun He WEB: http://www.uptodate.com/contents/glossary-of-common-biostatistical-and-epidemiological-terms A data item that refers to the odds that an individual with a specific condition has been exposed to a risk factor divided by the odds that a control has been exposed. The odds ratio is used in case-control studies. The odds ratio provides a reasonable estimate of the relative risk for uncommon conditions. yes