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