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本研究平行对比了宫形器(UCD)、不锈钢环(SSR)、MLCu250和TCu220C 四种宫内节育器在农村妇女中的使用效果。对分娩后3～9个月应采取避孕措施的哺乳期妇女711名,用临床流行病学的方法,严格控制有关干扰因素,用单盲法随机进入各组。置器后1、3、6、12个月进行随访,用Tietze 寿命表法计算四种节育器的继续存放率,用Log-rank X~2检验停用率,评价其使用效果。结果表明,不锈钢环一年累计存放率最低,与其它三种节育器间有极显著差异(P<0.01),其停用原因主要是意外妊娠、带器妊娠和脱落,其余三种节育器效果都比较好。但就出血/疼痛副作用而言,MLCu250最小,宫形器(UCD)次之,TCu220C 最差。本文也讨论了宫腔测量及哺乳期换器是否需要等问题。
In this study, we compared the effects of UCD, SSR, MLCu250 and TCu220C in rural women. 711 breastfeeding women should take contraceptive measures 3 to 9 months after childbirth. With clinical epidemiological methods, the relevant interference factors should be strictly controlled and randomized into each group by single-blind method. Follow-up was performed at 1, 3, 6 and 12 months after the device was set up. The Iteration rate of four IUDs was calculated by Tietze’s life table method. Log-rank X ~ 2 was used to test the discontinuation rate and the effect was evaluated. The results showed that the cumulative storage rate of stainless steel ring was the lowest in one year, with significant difference (P <0.01) with the other three types of IUDs. The main reasons for the discontinuation were unplanned pregnancy, pregnancy and shedding of the device, and the other three effects of IUD Are better. However, in terms of the side effects of bleeding / pain, MLCu250 was the smallest, followed by uterus (UCD) and TCu220C the worst. This article also discusses the need for uterine measurements and lactation.