Encuesta de Fecundidad
Knowledge and use of contraceptions. Fem. between 15-49
Females between 15 and 49 years, married sometime level of studies  contraceptive practices. 
Unidades: absolute figures

;Total;Never has used method;Has used before, but not currently;Currently use one efficient method;Currently use one  inefficient method;
Total;5.710.847;502.448;1.238.568;3.699.004;270.827;
Illiterate;18.150;4.580;5.403;2.321;5.846;
Without studies;170.933;32.216;33.826;90.764;14.126;
Primary education and second grade, GBE or first year of GCSE;3.208.662;335.010;668.959;2.012.909;191.784;
Secondary Education and Post-secondary non-higher;701.148;42.138;151.436;488.348;19.226;
1º, 2º and intermediate technical-professional studies;819.493;43.830;174.779;579.473;21.411;
Higher level technical-professional studies;9.875;298;1.850;7.727;..;
First year of tertiary education;343.133;17.971;85.742;229.915;9.504;
Tertiary education, university graduates and doctors;439.454;26.404;116.574;287.546;8.929;
Notas:
Fuente: National Statistics Institute