Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females married or with a partner level of studies situation relative to 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;3,02;6,49;6,88;4,11;79,5; Illiterate;100;..;5,7;..;5,15;89,16; Without studies;100;2,22;16,1;3,63;9,56;68,49; Primary education and second grade, GBE or first year of GCSE;100;2,55;8,16;8,93;4,75;75,62; Secondary Education and Post-secondary non-higher;100;2,1;3,26;3,13;2,75;88,75; 1º, 2º and intermediate technical-professional studies;100;3,66;5,6;7,47;2,76;80,52; Higher level technical-professional studies;100;..;..;1,97;0,86;97,17; First year of tertiary education;100;4,7;6,27;5,67;2,32;81,04; Tertiary education, university graduates and doctors;100;5,46;2,74;3,42;5,54;82,85; Notas: Fuente: National Statistics Institute