Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, non knowledge of contraceptions level of studies number of live births. Units: absolute figures ;Total;None;One;Two;Three;Four;Five and more;Average; Total;91,110;55,175;8,496;17,304;7,874;1,201;1,060;0.84; Illiterate;4,069;3,008;..;..;..;..;1,060;1.30; Without studies;2,504;..;..;1,303;..;1,201;..;2.96; Primary education and second grade, GBE or first year of GCSE;61,124;36,996;7,066;11,918;5,144;..;..;0.76; Secondary Education and Post-secondary non-higher;5,594;4,313;342;94;845;..;..;0.55; 1º, 2º and intermediate technical-professional studies;11,991;8,002;..;3,989;..;..;..;0.67; Higher level technical-professional studies;..;..;..;..;..;..;..;..; First year of tertiary education;5,828;2,856;1,088;..;1,884;..;..;1.16; Tertiary education, university graduates and doctors;..;..;..;..;..;..;..;..; Notes: Source: National Statistics Institute