Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, with two or more of live births knowledge of contraceptions age actual (years). Units: relative figures ;Total;From 15 to 19 years old;From 20 to 24 years old;From 25 to 29 years old;From 30 to 34 years old;From 35 to 39 years old;From 40 to 44 years old;45 to 49 years; Total;100.00;0.06;0.61;3.86;17.81;26.87;26.66;24.12; Does not know any method;100.00;..;..;..;..;31.82;22.73;45.45; Knows at least one inefficient method, but any efficient method;100.00;..;..;..;..;..;..;100.00; Knows at least one efficient method;100.00;0.06;0.62;3.88;17.94;26.85;26.70;23.95; Knows pill;100.00;0.07;0.46;4.51;17.31;25.80;26.04;25.80; Knows IUD;100.00;0.08;0.46;4.44;17.27;26.29;26.34;25.12; Knows diaphragm, cap, vaginal sponge;100.00;0.06;0.36;4.43;18.37;27.78;25.40;23.61; Knows abstinence;100.00;0.04;0.41;3.97;17.50;26.91;25.95;25.23; Knows condom;100.00;0.07;0.46;4.52;17.22;25.76;25.78;26.18; Knows cycle and basal body temperature;100.00;0.07;0.40;3.44;17.76;28.54;25.80;24.00; Knows withdrawal;100.00;0.09;0.45;4.07;17.32;26.95;26.44;24.68; Knows vaginal wash;100.00;..;0.35;3.17;16.57;28.65;26.60;24.67; Knows spermicides;100.00;..;0.42;3.57;19.11;29.86;25.27;21.77; Knows long breastfeeding;100.00;0.08;0.35;4.30;17.30;28.39;25.20;24.38; Knows injection;100.00;0.13;0.62;4.64;18.08;28.30;25.61;22.63; Knows the morning after pill;100.00;0.13;0.49;4.09;18.73;28.28;25.83;22.44; Knows sterilization;100.00;0.08;0.45;4.38;16.98;26.03;26.24;25.84; Knows vasectomy;100.00;0.08;0.40;4.40;17.35;26.25;26.27;25.24; Knows other methods;100.00;0.55;1.61;3.61;17.84;26.56;28.76;21.06; Notes: Source: National Statistics Institute