Relative risk ratio
In clinical epidemiology and evidence-based medicine, the relative risk ratio or more simply the relative risk, is a measure of the likelihood of a clinical outcome in group of patients exposed to a factor compared to a control group of patients. This measure should be contrasted with the absolute risk reduction.
|Experimental group||Cell A||Cell B||Total in the experimental group|
|Control group||Cell C||Cell D||Total in the control group|
|Total with the outcome||Total without the outcome|
Note that the relative risk ratio is that same as 1 - the relative risk reduction.
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