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Published online by Cambridge University Press: 01 August 2014
More and more genetic markers usable for twin zygosity determination have become available. A relatively small number of markers is sufficient to achieve a satisfactory probability of correctly classifying a twin pair. Previously only the genetic properties of markers have been considered when choosing the markers to be determined. A cost-effectiveness analysis, which considers both genetic properties and relative determination costs of markers, is presented and illustrated with data from the Finnish Twin Registry studies.