Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females between 15 and 49 years by level of studies and situation relativeto exposure to risk of pregnancy. Unidades: Relative figures ;Total;Currently pregnant;Non pregnant, female sterilized;Non pregnant, male sterilized;Non pregnant, female sterile;Non pregnant, female exposed to risk of pregnancy; Total;100;2,17;4,9;4,91;3,12;84,91; Illiterate;100;..;3,96;..;15,7;80,33; Without studies;100;1,96;14,21;3,21;8,44;72,18; Primary education and second grade, GBE or first year of GCSE;100;1,93;6,34;6,68;3,74;81,3; Secondary Education and Post-secondary non-higher;100;1,27;2,22;1,89;1,7;92,93; 1º, 2º and intermediate technical-professional studies;100;2,68;4,55;5,48;2,11;85,17; Higher level technical-professional studies;100;..;..;1,78;0,78;97,45; First year of tertiary education;100;3,36;4,85;4,05;1,84;85,9; Tertiary education, university graduates and doctors;100;3,75;2,09;2,35;4,12;87,69; Notas: Fuente: National Statistics Institute