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Related to concordance rate: Monozygotic twins
the proportion of a random sample of pairs that are concordant for a trait of interest. A high rate of concordance may be generated in several ways, many of which may result from irrelevant bias; but broadly it is taken as evidence of causal connection (for example, in the case of identical twins, a genetic component or in spouses of assortative mating).
A quantitative statistical expression for the concordance of a given trait, especially in pairs of twins in genetic studies.
con·cor·dance rate(kŏn-kōr'dăns rāt)
The rate of occurrence of a trait, behavior, or action in members of a specified group as compared with the occurrence of a trait of interest. Broadly, it is taken as evidence of causal connection.
The frequency with which a gene will be inherited or expressed by identical or fraternal twins.
See also: rate