National tables: studies, age and sex. Percentages Rate of persons who have had homosexual relationships at some time in their life by studies. Units: percentages Total;3.30; Lower than secondary education;2.74; Secondary education;3.57; University;3.93; Notes: 1) Includes females that have only had sexual practices with females Data corresponding to cells with less than 45,000 persons must be used with caution, because they may be affected by high sample errors. Source: National Statistics Institute