Level of studies completed by the main breadwinner	Variation coefficient	Total
Total	variation coefficient	1.08
without studies and illiterates	variation coefficient	4.89
primary education	variation coefficient	2.43
secondary education, first cycle	variation coefficient	3.29
secondary education, second cycle	variation coefficient	3.53
higher non-university studies	variation coefficient	5.97
university studies, first cycle	variation coefficient	5.86
university studies, 2nd and 3rd cycle	variation coefficient	5.88