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目的了解宫内节育器(IUD)因出血和/或疼痛取出的影响因素。方法本文使用“十五”国家科技攻关课题“宫内节育器失败原因及预防技术对策的研究”子课题的数据进行巢式病例对照研究。363位对象因出血和/或疼痛取出IUD为病例组,16235位对象完成1年随访且未发生任何结局为对照组。采用两水平logistic回归模型进行分析。结果两水平模型分析结果显示1水平变量IUD种类、文化程度、痛经、置器后剧烈活动、服务机构类别,以及2水平变量“2004年IUD放取手术并发症数”是IUD因出血/疼痛取出的危险因素。结论加强对服务人员的技术培训,置器时了解使用者的生物学特征,针对不同特征的对象选择合适的IUD,以降低IUD的因出血和/或疼痛取出率。
Objective To understand the factors affecting the removal of IUD due to bleeding and / or pain. Methods In this paper, we use the data of “fifteen ” national scientific and technological research topics “the causes of failure of intrauterine devices and the prevention of technical countermeasures ” sub-topics to carry out a nested case-control study. Thirty-six (363) patients with IUD for hemorrhage and / or pain were selected as the case group and 16235 subjects completed the one-year follow-up without any outcome as the control group. Two-level logistic regression model was used for analysis. Results The results of two-level model analysis showed that the IUD type, educational level, dysmenorrhoea, post-device intensive activity, service organization category, and 2 level variables of IUD 1 were “IUD surgical complications in 2004” The risk of pain removal. Conclusion The technical training of service personnel should be strengthened. The biological characteristics of the users should be understood when setting the device. The suitable IUDs should be selected according to different characteristics to reduce the bleeding rate and / or pain removal rate of IUDs.