[Marriage structure of the Kharkov population according to nationality and birthplace].

Positive assortative mating for birthplace and nationality has been revealed by means of sample analysis of couples married in two districts of Kharkov in 1960 and 1985. The contingency coefficient measuring the association between birth places of husband and wife was K = 0.15 in one district in 1960 and K = 0.18 in the other, these values being K = 0.16 and K = 0.18 for these districts, respectively, in 1985. A higher degree of assortative mating was observed for the nationality character: K = 0.40 and K = 0.21 in 1960 and K = 0.23 and K = 0.25 in 1985. The mean marriage substance increased from 578 to 699 km for 25 years.