Ipas, Chapel Hill, NC, USA.
Contraception. 2013 Nov;88(5):619-23. doi: 10.1016/j.contraception.2013.05.009. Epub 2013 May 23.
Our study investigated whether women with etonogestrel implant placement in the immediate postabortion period have similar continuation rates to women with interval placement.
This is a prospective cohort study of women at Boston Medical Center. We compared 1-year continuation rates in women who had immediate postabortion placement to interval placement using Cox proportional hazard models.
One hundred five women were enrolled, 53 in the abortion and 52 in the interval group. There were two losses to follow-up leaving 103 women for analysis. The overall 1-year continuation rate was 74.8%, with 68.6% postabortion continuation and 80.8% interval continuation. The risk of discontinuation in women with postabortion placement was higher but not statistically different than women with interval placement (unadjusted hazard ratio: 1.79, 95% confidence interval: 0.81-3.96).
Overall etonogestrel implant continuation was acceptable with similar rates for postabortion and interval placement. For women who want a contraceptive implant after an abortion, immediate placement should be available.
本研究旨在探讨在流产后即刻放置依托孕烯植入剂的女性与间隔放置的女性相比，其续用率是否相似。
这是波士顿医疗中心的一项前瞻性队列研究。我们使用 Cox 比例风险模型比较了即刻流产后放置与间隔放置的女性在 1 年内的续用率。
共有 105 名女性入组，流产组 53 例，间隔组 52 例。有 2 名女性失访，103 名女性进行了分析。总体 1 年续用率为 74.8%，流产后续用率为 68.6%，间隔续用率为 80.8%。即刻流产后放置的女性停药风险较高，但与间隔放置的女性无统计学差异（未调整的风险比：1.79，95%置信区间：0.81-3.96）。
依托孕烯植入剂总体续用率可接受，流产后即刻放置和间隔放置的续用率相似。对于流产后希望使用避孕植入物的女性，应提供即刻放置服务。
