Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years marital status contraceptive practices. Unidades: relative figures ;Total;Never has used method;Has used before, but not currently;Currently use one efficient method;Currently use one inefficient method; Total;100;27,44;16,28;53,17;3,11; Single;100;51,34;9,34;38,3;1,02; Married;100;8,82;19,26;66,91;5,01; Widows;100;15,98;58,23;20,35;5,44; Separated or divorced;100;6,75;47,04;45,32;0,89; Notas: Fuente: National Statistics Institute