meanwhile the focus on changes may hide important differences in the levels the highest poverty rate for children in large families was observed in bulgaria where there was virtually no change between and for any of the two subgroups data for is used for belgium and ireland break in the series for austria and the uk in migrant households are defined as those with at least one adult born outside the eu countries with insufficient case numbers of children in migrant households are excluded from the analysis in countries like iceland and greece where the overall child poverty rates increased substantially during the great recession poverty rates rose much faster for children in migrant households between and