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. 
Unidades: relative figures

	Total	None	One	Two	Three	Four	Five and more	
Total	100	60,56	9,32	18,99	8,64	1,32	1,16	
Illiterate	100	73,94	..	..	..	..	26,06	
Without studies	100	..	..	52,05	..	47,95	..	
Primary education and second grade, GBE or first year of GCSE	100	60,53	11,56	19,5	8,42	..	..	
Secondary Education and Post-secondary non-higher	100	77,09	6,11	1,68	15,11	..	..	
1º, 2º and intermediate technical-professional studies	100	66,73	..	33,27	..	..	..	
Higher level technical-professional studies	..	..	..	..	..	..	..	
First year of tertiary education	100	49	18,66	..	32,34	..	..	
Tertiary education, university graduates and doctors	..	..	..	..	..	..	..	
Notas:
Fuente: National Statistics Institute