Definition of historical control subject - NCI Dictionary of Cancer Terms

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historical control subject

An individual treated in the past and used in a comparison group when researchers analyze the results of a clinical study that had no control group. The use of a control, or comparison, group helps researchers determine the effects of a new treatment more accurately.

Previous Definitions:	histone, histone deacetylase, histone deacetylase inhibitor, histopathology, historic cohort study
Next Definitions:	HIV, HIV antibody, HIV positive, HLA, HLH