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- W2944481693 abstract "INTRODUCTION: There is an unmet need for effective, non-hormonal methods of contraception. Natural Cycles is a digital fertility awareness-based method of contraception delivered in the form of a mobile app. The aim of this study was to assess the effectiveness of the app in a cohort of women from the United States (US). METHODS: Data from 18,304 users registered between August 2014 and November 2017 were included in the analysis. Participants were included if they were between 18 and 45 years of age and had at least 20 daily data entries. Questions addressing key characteristics (age, body mass index (BMI) and previous hormonal contraception) were mandatory for onboarding into the app. Other demographics were assessed through in-app messaging. Contraceptive effectiveness during typical use was calculated as both a 13-cycle cumulative probability of pregnancy from a life-table analysis and as a one-year Pearl Index (PI). (EPN, Stockholm, diary number 2017/563-31). RESULTS: The mean age of users of the application was 29 years and mean BMI was 22. The majority of the cohort had a university degree or higher (74.8%) and reported being in a stable relationship (85.7%). The 13-cycle failure rate was 6.2% ± 0.5 and the one-year PI was 5.9 ± 0.2. CONCLUSION: In this real-world observational study, this digital fertility awareness-based method of contraception had a 13-cycle failure rate of 6.2% in a cohort of users from the US. This is in-line with the typical-use failure rates of Natural Cycles users globally." @default.
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- W2944481693 date "2019-05-01" @default.
- W2944481693 modified "2023-09-23" @default.
- W2944481693 title "Effectiveness of a Digital Fertility Awareness-Based App for Contraception in the United States [4M]" @default.
- W2944481693 doi "https://doi.org/10.1097/01.aog/01.aog.0000559277.86007.af" @default.
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