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control group
[ kuhn-trohl groop ]
noun
- (in an experiment or clinical trial) a group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group when treatment results are evaluated.
control group
noun
- any group used as a control in a statistical experiment, esp a group of patients who receive either a placebo or a standard drug during an investigation of the effects of another drug on other patients
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51Թ History and Origins
Origin of control group1
First recorded in 1950–55
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