Max Rady College of Medicine

Term: Matched Cohorts

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Glossary Definition

Last Updated: 2015-05-12

Definition:

Two groups of individuals in a study who are made to have a similar distribution on some confounding characteristics (typically demographics such as age, sex, residence, income, etc.). One group is the study cohort and they will all share a characteristic to be analyzed, such as diagnosed with a disease or exposed to a drug or vaccine, while the other group is the comparison cohort and they will not have this characteristic or exposure.

In Martens et al. (2015), smokers were matched to non-smokers on age (within five years, with priority given to exact matches), sex, income quintile, and Regional Health Authority (RHA), and matching was nested within survey.

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