Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females between 15 and 49 years level of studies cohabitation situation. Unidades: Relative figures ;Total;With spouse;With stable partner in the household;With stable partner out of household;With occasional relations;Another situation; Total;100;51,62;3,81;15,91;4,13;24,54; Illiterate;100;48,46;21,07;..;5,02;25,44; Without studies;100;81,5;6,23;0,54;2,97;8,76; Primary education and second grade, GBE or first year of GCSE;100;62,08;4,05;8,71;2,52;22,64; Secondary Education and Post-secondary non-higher;100;32,12;3,22;24,92;6,08;33,66; 1º, 2º and intermediate technical-professional studies;100;46,61;3,42;23,38;4,86;21,73; Higher level technical-professional studies;100;25,75;14,89;49,41;..;9,95; First year of tertiary education;100;50,62;3,5;17,4;4,43;24,05; Tertiary education, university graduates and doctors;100;43,32;3,13;22,28;7,2;24,07; Notas: Fuente: National Statistics Institute