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    MEC for patch and ring same as for combined pills; Implanon implant MEC same as for Norplant.

    Rinehart W

    In: WHO updates medical eligibility criteria for contraceptives, by Ward Rinehart. Baltimore, Maryland, Johns Hopkins Bloomberg School of Public Health, Center for Communication Programs, Information and Knowledge for Optimal Health Project [INFO], 2004 Aug. 7. (INFO Reports No. 1; USAID Grant No. GPH-A-00-02-00003-00)

    The Expert Working Group incorporated three new contraceptive methods into the MEC—the combined hormonal contraceptive patch, the combined hormone-releasing vaginal ring, and the etonogestrel-releasing implant, Implanon. The hormone levels and patterns typical of the patch and the ring are similar to those for COCs, as are the type and frequency of side effects reported in comparative studies. Therefore, the meeting concluded, MEC classifications applying to COCs can be assumed to apply to the patch and ring as well. There is no direct evidence concerning use of either method among women with health conditions. The meeting also assumed that the MEC classifications for the 5-year levonorgestrel implant Norplant can also apply to the 3-year etonogestrel implant Implanon. (excerpt)
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