In epidemiology and biostatistics, the experimental event rate (EER) is a measure of how often a particular statistical event (such as response to a drug, adverse event or death) occurs within the experimental group (non-control group) of an experiment.[1]
This value is very useful in determining the therapeutic benefit or risk to patients in experimental groups, in comparison to patients in placebo or traditionally treated control groups.[citation needed]
Three statistical terms rely on EER for their calculation: absolute risk reduction, relative risk reduction and number needed to treat.
^"Experimental event rate (EER)". www.medicine.ox.ac.uk. Archived from the original on 20 August 2010. Retrieved 22 May 2022.
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