摘要
本研究用实验流行病学方法,随机对比了单环、TCu 220 C、MLCu 375和宫形器在广东省育龄妇女中的避孕效果。从1988年3月至1989年5月,每种节育器各置384例共1536例。本文报道研究的初步结果:MLCu 375,TCu 220 C和宫形器的一年粗累积继续存放率明显高于单环;粗累积脱落率明显低于单环。MLCu 375和TCu 220 C的粗累积妊娠率明显低于单环和宫形器,皆有极显著统计学意义。本文还对可能影响节育器避孕效果的一些因素进行了单因素和Cox模型多因素生存分析。
The use-effectiveness of four IUDs-stainless Steel Ring (SSR), TCu 220 C. MLCu 375 and Uterine Cavity-shaped device (UCSD) inserted at intervals was compared randomly in 5 cooperating centres in Guangdong province, and this is the preliminary results for 18 months of use. A total of 1,536 cases were recruited with 384 subjects for each from March 1988 to May 1989. MLCu 375, TCu 220 C and UCSD had much higher gross cumulative continuation rate (90.38. 87.93. 85.32. 70.66) as well as much lower expulsion rate (5.62, 6.39. 5.07. 20.43) respectively than SSR for 12 months of use. Also MLCu 375 and TCu 220 C showed much lower gross cumulative pregnancy rate(0.76, 1.17) than SSR (6.10) and UCSD (4.12) for one year of use. All of these differences achieved highly statistical significance (see Table 2). A survival analysis with covariate of IUD contraception was conducted (Table 3).
出处
《生殖与避孕》
CAS
CSCD
北大核心
1992年第3期37-43,共7页
Reproduction and Contraception
关键词
节育器
流行病学
避孕效果
IUD, insertion after menstruation, Experimental epidemiology
