Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, use contraceptions currently use of contraceptions size of municipality of residence. Units: relative figures ;Total;Up to 10,000 inhabitants;From 10,001 to 50,000 inhabitants;From 50,001 to 500,000 inhabitants;More than 500,000 inhabitants; Total;100.00;21.68;25.21;36.29;16.81; Uses at least one inefficient method, but any efficient method;100.00;35.28;25.23;27.74;11.75; Uses at least one efficient method;100.00;20.89;25.21;36.79;17.10; Uses pill;100.00;18.01;28.22;35.66;18.11; Uses IUD;100.00;16.52;29.49;34.89;19.10; Uses diaphragm, cap, vaginal sponge;100.00;54.52;5.07;40.41;..; Uses abstinence;100.00;25.72;20.76;36.96;16.56; Uses condom;100.00;21.99;23.55;36.60;17.85; Uses cycle and basal body temperature;100.00;3.46;32.17;41.40;22.97; Uses withdrawal;100.00;36.27;27.41;25.64;10.68; Uses vaginal wash;100.00;68.21;12.86;14.92;4.01; Uses spermicides;100.00;15.49;27.65;21.71;35.16; Uses long breastfeeding;100.00;27.15;14.88;27.59;30.38; Uses injection;100.00;39.26;37.93;18.20;4.61; Uses the morning after pill;100.00;19.56;30.25;50.19;..; Uses sterilization;100.00;22.84;28.95;34.78;13.44; Uses vasectomy;100.00;20.77;20.85;44.18;14.20; Uses other methods;100.00;16.32;14.26;38.49;30.93; Notes: Source: National Statistics Institute