Encuesta de Fecundidad
Females who got married sometime with any child live birth
Fem., 15-49 years, married sometime, at least one child live birth  level of studies  duration of protogenesic interval. 
Unidades: relative figures

;Total;Negative;From 0 to 7 months;From 8 to 11 months;From 12 to 23 months;From 24 to 35 months;From 36 to 47 months;From 48 to 59 months;60 and over;
Total;100;4,54;15,84;17,5;28,25;13,22;8,06;3,88;8,71;
Illiterate;100;3,01;18,37;18,55;39,09;9,79;11,19;..;..;
Without studies;100;6,34;16,13;27,88;30,89;7,29;8,03;0,43;3,03;
Primary education and second grade, GBE or first year of GCSE;100;5,3;17,95;20,73;28,18;11,46;7,06;2,73;6,58;
Secondary Education and Post-secondary non-higher;100;2,98;14,82;9,38;31,69;14,08;8,49;5,61;12,94;
1º, 2º and intermediate technical-professional studies;100;4,64;15,72;13,48;24,7;16,59;7,98;5,82;11,09;
Higher level technical-professional studies;100;..;8,42;..;30,93;18,63;32,33;..;9,69;
First year of tertiary education;100;1,74;9,17;13,18;31,21;16,49;11,2;5,31;11,7;
Tertiary education, university graduates and doctors;100;2,12;5,16;11,25;25,76;20,09;12,88;7,48;15,26;
Notas:
Fuente: National Statistics Institute