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: relative figures ;Total;Does not visit a medical center;Visits a public center;Visits a private center; Total;100.00;48.63;33.74;17.63; Illiterate;100.00;91.20;8.80;..; Without studies;100.00;53.17;38.22;8.61; Primary education and second grade, GBE or first year of GCSE;100.00;48.36;36.47;15.16; Secondary Education and Post-secondary non-higher;100.00;47.59;31.34;21.07; 1º, 2º and intermediate technical-professional studies;100.00;48.02;34.56;17.42; Higher level technical-professional studies;100.00;55.48;22.74;21.78; First year of tertiary education;100.00;45.89;31.39;22.72; Tertiary education, university graduates and doctors;100.00;52.07;25.43;22.50; Notes: Source: National Statistics Institute