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作者通过对400名产后即置含铜宫内节育器(Cu-IUD)和释放孕酮的宫内节育器(P-IUD)妇女的随访,比较了二种节育器的脱落率和副作用。研究智利的400名产妇,所有产妇于产后10分钟内以手工或以器械协助置入 Cu-IUD 或 P-IUD,对象以随机方式分为4组(每组100例):手工置CU-IUD 组(TCu/手);器械协助置入Cu-IUD组(TCu/器械);手工置 P-IUD 组(P/手);器械协助置入 P-IUD 组(P/器械)。每组对象的年龄、产次、社会经济地位及文化水平相似。本研究所用的 TCu 为标准的 Cu_(200)IUD,P-IUD 内含
The authors compared the rate of shedding and side effects of two types of IUDs to 400 women who were born with Cu-IUD and P-IUD. A total of 400 maternal women from Chile were enrolled. All maternal patients were placed in Cu-IUD or P-IUD manually or with instrumentation within 10 minutes after delivery. Subjects were randomly divided into 4 groups (100 in each group): CU-IUD (TCu / hand); instrument assisted Cu-IUD group (TCu / instrument); manual P-IUD group (P / hand); instrument assisted P-IUD group (P / instrument). The age, parity, socioeconomic status and cultural level of each group of subjects are similar. TCu used in this study is a standard Cu_ (200) IUD containing P-IUD