According to the nationality of the spouses in Romani marriages, the highest ethnic homogeny was found among the Roma of all ethnic groups in the Czech Republic. The younger a married Romani man is, the more likely he is to have a heterogeneous mariage. For married Romani women, the proportion is the same regardless of age. The number of live births among the Roma minority is higher than that among the Czech population. There are 3.43 live births for each married Romani woman, while for the Czechs the figure is only 1.94.
Romani families have on average two times as many dependent children as Czech families.