Continuation rates for participants who chose LARC were higher than for those who chose short-acting methods Table 1 8. Seventy-five percent of the cohort chose LARC: 46% chose the LNG-IUD, 12% chose the copper IUD, and 17% chose the subdermal implant. In the Contraceptive CHOICE research project, a prospective cohort of 9,256 women aged 14–45 years were offered their choice of contraceptive method without charge 6. Although the reduction in unintended pregnancy is multifactorial, increased use of LARC likely has contributed 6 7. An historic 18% decrease in unintended pregnancy occurred in the United States between 2008, when 51% of pregnancies were unintended, and 2011, when only 45% of pregnancies were unintended 5. women who rely on LARC, 10.3% use IUDs and 1.3% use the implant. ![]() Use of LARC has increased during the past decade, from 2.4% in 2002 to 8.5% in 2009 to 11.6% in 2012, the most recent year for which data are available from the National Survey of Family Growth 4. Five IUDs are currently marketed in the United States: the copper-containing IUD and four levonorgestrel-releasing intrauterine devices (LNG-IUDs). Two types of LARC are available in the United States: 1) intrauterine devices (IUDs) and 2) the etonogestrel single-rod contraceptive implant.
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