National tables: studies, age and sex. Values
Persons 18 to 49 years by sex, parents' highest level of studies   and preferred source of sexual information.
Units: thousands of persons

,Total,Old parents or relatives,Siblings or friends,Partner,Professionals,Various support,No data recorded,
Both sexes,
    Total,20,759.6,10,771.8,2,568.9,1,033.9,5,225.5,703.6,456.0,
    Lower than secondary education,15,169.1,8,044.9,1,796.3,780.6,3,779.2,446.1,321.9,
    Secondary education,2,789.3,1,345.1,360.0,139.0,747.8,142.1,55.3,
    University,2,267.1,1,083.8,335.7,77.7,614.6,90.4,64.9,
    No data recorded,534.1,297.9,76.8,36.6,83.8,25.0,13.9,
Males,
    Total,10,532.1,4,854.9,1,656.9,580.2,2,769.8,376.4,293.9,
    Lower than secondary education,7,651.8,3,560.2,1,171.6,428.4,2,041.3,258.8,191.4,
    Secondary education,1,344.2,615.3,191.1,73.6,367.1,55.4,41.8,
    University,1,221.7,521.2,232.9,56.3,313.9,49.2,48.2,
    No data recorded,314.4,158.2,61.3,21.9,47.6,13.0,12.4,
Females,
    Total,10,227.5,5,916.9,911.9,453.7,2,455.7,327.2,162.0,
    Lower than secondary education,7,517.3,4,484.8,624.7,352.2,1,737.9,187.3,130.4,
    Secondary education,1,445.1,729.8,168.8,65.4,380.8,86.8,13.5,
    University,1,045.4,562.6,102.8,21.4,300.7,41.2,16.7,
    No data recorded,219.7,139.7,15.6,14.7,36.3,12.0,1.4,
Notes:
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