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目的:初步观察\\\"二日法\\\"在中国育龄妇女中使用的避孕效果。方法:对上海市黄浦区122对志愿使用\\\"二日法\\\"的育龄夫妇进行连续使用≥10个周期避孕情况的观察,随访资料用妇女年统计方法分析。结果:122例共使用1 414个妇女月。其中1例在使用的第11个月时意外妊娠;意外妊娠的Pearl指数为0.849。结论:初步观察的资料显示,\\\"二日法\\\"可以作为\\\"知情选择\\\"的避孕方法之一,但在推广前宜进一步开展扩大的临床有效性试验。
OBJECTIVE: To observe the contraceptive effect of \\ \"2-day method \\\" used in Chinese women of childbearing age. Methods: The observation of contraception in ≥10 cycles of 122 consecutive couples of childbearing age who were willing to use \\ \"2-day method \\\" in Huangpu district of Shanghai was conducted. The follow-up data were analyzed by the women\'s annual statistical method. Results: A total of 1 414 women were used in 122 cases. One of the cases had an unwanted pregnancy on the 11th month of use; the Pearl Index for unplanned pregnancy was 0.849. CONCLUSIONS: The preliminary observation data show that \\ \"2-day law \\\" can be used as \\ \"informed choice \\\" of contraceptive methods, but should be further carried out before the promotion of clinical trials to expand effectiveness.