Characterization of the marriage structure and migration in Chuvash population

Parameters of the marriage structure and migration were analyzed on the basis of marriage records in the Kanash, Cheboksary, and Morgaushi raions of the Chuvash Republic. Ethnic assortiveness was not detected in Chuvashes and was 4.16-18.05 in Russians. Gene flow between Chuvashes and Russians was 5.1-8.3%; the degree of endogamy was 0.61-0.70.