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观察300对育龄夫妇4516个妇女月连续使用Billings自然避孕法的避孕效果。用生命表法统计12个月和18个月时净累积停用率分别为14.57/百妇女和21.21/百妇女,续用率分别为85.43/百妇女和78.79/百妇女。因方法学本身引起的意外妊娠停用率较低,分别为1.02/百妇女和1.37/百妇女。本文认为除方法学意外妊娠外,其它原因引起的妊娠与使用者有关。只要进一步改进培训方法,调动受试者主观能动性和强调丈夫的合作,定能降低使用者引起的停用率,提高续用率。Billings自然避孕法效果可靠,无任何副作用,可进一步推广使用。
To observe the contraceptive effect of 300 pairs of 4516 women of childbearing age on the continuous use of Billings natural contraception. The net cumulative disabling rates at 12 months and 18 months were 14.57 per 100 women and 21.21 per 100 women, respectively, with a life-table of 85.43 per 100 women and 78.79 per 100 women. The discontinuation rate of unplanned pregnancies due to the methodology itself was low at 1.02 per 100 women and 1.37 per 100 women, respectively. This article believes that in addition to the method of unplanned pregnancy, pregnancy caused by other causes and users. As long as the further improvement of training methods to mobilize the subjective initiative and emphasize the cooperation of the husband, will be able to reduce user-caused disabling rate, improve the renewal rate. Billings natural contraception method is reliable, without any side effects, can be further promoted.