Concordance rate refers to agreement ratios between people diagnosed as having a particular disorder and their relatives.
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Concordance rate refers to statistic indicating the percentage of twin pairs or other pairs of relatives that exhibit the same disorder; the likelihood that, if one twin has a given disorder, the other twin also has it. It is defined also as agreement ratios between people diagnosed as having a particular disorder and their relatives.
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Concordance rate is defined as the probability that both twins will develop a disorder if one twin has the disorder