Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, use or have used contraceptions level of studies medical advice for use of contraceptions. Units: absolute figures ;Total;Does not visit a medical center;Visits a public center;Visits a private center; Total;7,376,058;3,586,955;2,488,629;1,300,474; Illiterate;21,101;19,243;1,858;..; Without studies;146,880;78,093;56,142;12,645; Primary education and second grade, GBE or first year of GCSE;3,458,508;1,672,648;1,261,378;524,481; Secondary Education and Post-secondary non-higher;1,265,161;602,030;396,529;266,603; 1º, 2º and intermediate technical-professional studies;1,243,830;597,287;429,812;216,731; Higher level technical-professional studies;28,301;15,702;6,436;6,162; First year of tertiary education;473,486;217,281;148,617;107,588; Tertiary education, university graduates and doctors;738,791;384,670;187,858;166,263; Notes: Source: National Statistics Institute