Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years marital status contraceptive practices. Units: absolute figures ;Total;Never has used method;Has used before, but not currently;Currently use one efficient method;Currently use one inefficient method; Total;10,165,237;2,789,179;1,654,807;5,404,945;316,307; Single;4,454,390;2,286,730;416,238;1,705,941;45,481; Married;5,247,338;462,939;1,010,582;3,511,178;262,639; Widows;89,042;14,228;51,850;18,123;4,841; Separated or divorced;374,467;25,282;176,137;169,703;3,346; Notes: Source: National Statistics Institute