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tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”:
Abstract
Abstract
Objectives: The aim of the study was to retrospectively evaluate the effectiveness of a fertility awareness-based method supported by a mobile-based application to prevent unwanted pregnancies as a method of natural birth control. Methods: In a retrospective analysis, the application’s efficiency as a contraceptive method was examined on data from 4054 women who used the application as contraception for a total of 2085 woman-years. Results: The number of identified unplanned pregnancies was 143 during 2053 woman-years, giving a Pearl Index of 7.0 for typical use. Ten of the pregnancies were due to the application falsely attributing a safe day within the fertile window, producing a perfect-use Pearl Index of 0.5. Calculating the cumulative pregnancy probability by life-table analysis resulted in a pregnancy rate of 7.5% per year (95% confidence interval 5.9%, 9.1% per year). Conclusions: The application appears to improve the effectiveness of fertility awareness-based methods and can be used to prevent pregnancies if couples consistently protect themselves on fertile days.
Chinese abstract
目的：本研究的目的是回顾性评价一个建立在生育意识基础上的移动应用程序作为一种自然的生育控制方法，防止不必要的妊娠的有效性。方法：在回顾性分析中，通过4054名妇女对该应用程序共2085妇女年使用的资料，分析该应用程序作为一种避孕方法的有效性。结果：在2053妇女年的使用中，计划外妊娠是143次，典型使用的珀儿指数是7.0。10次妊娠是由于应用程序错误地认为受孕期是安全期，产生完美的珀儿指数为0.5。通过寿命表分析计算的累积妊娠概率为每年7.5%（95%的置信区间为每年5.9%-9.1%）。结论：应用程序改善以生育意识为基础的避孕方法的有效性，如果夫妻在排卵期坚持保护自己，它可以用来防止妊娠。