Genetic demographic processes in Ukrainian population in 1990. The marriage structure of the Donetsk population

Analysis of records of the marriages that were contracted in the city of Donetsk revealed that, between 1960 and 1992, the marriage rate in the city decreased from 14.8 to 4.7 per 1000 people, the migration rate (m) decreased from 0.71 to 0.34, and the endogamy index increased from 0.123 to 0.458. Between 1960 and 1985, outbreeding in the Donetsk population increased, which was expressed in an increase in the frequency of interethnic marriages, migration range, and the average marital distance, as well as a decrease in the proportion of the indigenous ethnic group (Ukrainians). By 1992, outbreeding decreased: the population became more homogeneous ethnically (93% Slavic), the proportion of Ukrainians and the frequency of monoethnic marriages increased, and the average marital distance decreased. In 1960 and 1992, the coefficients of marriage contingency (K) with respect to ethnicity were 0.34 and 0.22, respectively. Regarding birthplaces, the population became almost panmictic (in 1960 and 1992, the K values were 0.15 and 0.10, respectively). Marriage structure with respect to occupation remained almost unchanged (the K values were 0.22 and 0.23, respectively). Throughout the entire period studied, the most pronounced population subdivision was that with respect to the education level (the K values were 0.36 and 0.39, respectively).