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于1990年3～4月对郑州市2814例纺织女工使用宫内节育器(简称IUD)的效果进行了流行病学调查。发现其中脱落87例,带器妊娠及意外妊娠分别为53例和23例,因症取出35例,非因症取出31例,共停用229例,继续存放2585例。120月净累计存放率为每百妇女81.37。据单因素及多因素分析显示,IUD的脱落与年龄、怀孕次数、多次人流有关。带器妊娠和意外妊娠均与怀孕次数、多次人流有关,而与年龄无关。继续存放与IUD存放时间、年龄、怀孕次数、置器年龄、初婚年龄、置器类型、乳期放置、流产次数及初产年龄有关。以上各项失败结局均与劳动强度、劳动姿势无明显关系。
From March to April 1990, epidemiological investigation was carried out in 2814 women workers in Zhengzhou using IUD. Among them, 87 cases were found to be exfoliated, with 53 cases and 23 cases of pregnancy and unplanned pregnancy, respectively. 35 cases were removed due to disease, 31 cases were noninfected, 229 cases were stopped and 2585 cases were kept. The net cumulative deposit rate for the month of 120 was 81.37 per 100 women. According to univariate and multivariate analysis, IUD shedding was related to age, number of pregnancies and multiple abortions. Pregnancy and pregnancy with unwanted pregnancies are associated with the number of pregnancies, multiple abortions, but not with age. Continue to store and IUD storage time, age, number of pregnancies, device age, age of first marriage, type of device, placement of milk, the number of abortions and the age of first birth. The failure of all the above outcomes and labor intensity, labor posture no significant relationship.