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date: 28 February 2021

Countermatching 

Source:
A Dictionary of Epidemiology
Author(s):

Miquel Porta

A matching procedure for case-control studies nested within a Cohort when exposure status is known for all cohort members and information about confounders is acquired only on a matched sample of cases and controls, with controls selected to have the opposite exposure of their matched cases; this countermatching may improve the statistical efficiency of the study.... ...

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