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. Unidades: relative figures ;Total;Does not visit a medical center;Visits a public center;Visits a private center; Total;100;48,63;33,74;17,63; Illiterate;100;91,2;8,8;..; Without studies;100;53,17;38,22;8,61; Primary education and second grade, GBE or first year of GCSE;100;48,36;36,47;15,16; Secondary Education and Post-secondary non-higher;100;47,59;31,34;21,07; 1º, 2º and intermediate technical-professional studies;100;48,02;34,56;17,42; Higher level technical-professional studies;100;55,48;22,74;21,78; First year of tertiary education;100;45,89;31,39;22,72; Tertiary education, university graduates and doctors;100;52,07;25,43;22,5; Notas: Fuente: National Statistics Institute