Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, use contraceptions currently use of contraceptions level of studies. Units: absolute figures Total Illiterate Without studies Primary education and second grade, GBE or first year of GCSE Secondary Education and Post-secondary non-higher 1º, 2º and intermediate technical-professional studies Higher level technical-professional studies First year of tertiary education Tertiary education, university graduates and doctors Total 5,721,252 14,388 111,828 2,673,103 1,012,126 972,142 26,450 361,372 549,842 Uses at least one inefficient method, but any efficient method 316,307 6,738 17,913 197,713 21,256 50,176 .. 11,255 11,257 Uses at least one efficient method 5,404,945 7,650 93,915 2,475,390 990,870 921,966 26,450 350,118 538,586 Uses pill 1,232,027 318 9,163 484,943 274,111 233,381 8,003 84,938 137,171 Uses IUD 411,728 .. 5,334 199,209 67,266 68,160 2,204 27,249 42,305 Uses diaphragm, cap, vaginal sponge 10,363 .. .. 3,727 1,242 2,984 1,078 532 800 Uses abstinence 197,929 3,693 10,336 81,443 45,708 13,203 2,893 11,406 29,248 Uses condom 2,627,850 2,348 32,598 1,092,939 553,784 444,931 14,198 183,554 303,499 Uses cycle and basal body temperature 46,905 .. .. 20,746 4,882 6,081 .. 7,164 8,032 Uses withdrawal 450,804 7,159 22,770 272,589 45,943 63,812 .. 23,850 14,682 Uses vaginal wash 38,680 .. .. 7,954 4,603 26,123 .. .. .. Uses spermicides 30,155 .. .. 5,646 6,027 9,979 163 .. 8,341 Uses long breastfeeding 11,465 .. .. 1,152 3,592 4,172 .. 951 1,597 Uses injection 9,513 118 .. 3,854 414 5,127 .. .. .. Uses the morning after pill 6,188 .. .. 3,019 1,959 1,210 .. .. .. Uses sterilization 607,184 1,174 36,851 370,799 56,858 84,541 .. 32,190 24,771 Uses vasectomy 515,446 .. 6,153 329,575 40,616 91,068 681 25,651 21,703 Uses other methods 32,821 .. 1,421 4,630 10,397 3,829 .. 8,073 4,472 Notes: Source: National Statistics Institute