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: absolute 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 5,721,252 1,240,532 1,442,598 2,076,448 961,675 Uses at least one inefficient method, but any efficient method 316,307 111,605 79,809 87,731 37,162 Uses at least one efficient method 5,404,945 1,128,926 1,362,788 1,988,717 924,513 Uses pill 1,232,027 221,928 347,694 439,327 223,078 Uses IUD 411,728 68,013 121,430 143,650 78,634 Uses diaphragm, cap, vaginal sponge 10,363 5,650 525 4,187 .. Uses abstinence 197,929 50,904 41,085 73,156 32,784 Uses condom 2,627,850 577,994 618,952 961,852 469,052 Uses cycle and basal body temperature 46,905 1,623 15,089 19,418 10,775 Uses withdrawal 450,804 163,522 123,562 115,591 48,129 Uses vaginal wash 38,680 26,383 4,973 5,772 1,551 Uses spermicides 30,155 4,671 8,337 6,546 10,601 Uses long breastfeeding 11,465 3,113 1,706 3,163 3,483 Uses injection 9,513 3,735 3,608 1,732 439 Uses the morning after pill 6,188 1,210 1,872 3,106 .. Uses sterilization 607,184 138,662 175,750 211,184 81,588 Uses vasectomy 515,446 107,080 107,467 227,701 73,197 Uses other methods 32,821 5,357 4,680 12,633 10,152 Notes: Source: National Statistics Institute