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The failure rate of fertility awareness varies widely depending on the system used to identify fertile days, the instructional method, and the population being studied. Some studies have found actual failure rates of 25% per year or higher.
For avoiding pregnancy, the perfect-use failure rate of Creighton was 0.5%, which means that for each year that 1,000 couples using this method perfectly, that there are 5 unintended pregnancies. The typical-use failure rate, representing the fraction of couples using this method that actually had an unintended pregnancy, is reported as 3.2% ...
In 2019, the birth rates for Hispanic teens (25.3 per 1,000) and non-Hispanic Black teens (25.8 per 1,000) were more than two times higher than the rate for non-Hispanic White teens (11.4 per 1,000). The birth rate of American Indian/Alaska Native teens (29.2 per 1,000) was highest among all race/ethnicities.
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Three years after a malfunctioning storage tank destroyed thousands of frozen eggs and embryos at an Ohio fertility clinic, its former lab director is blaming what he described as bungling staff ...
A woman whose menstrual cycles ranged in length from 30 to 36 days would be estimated to be infertile for the first 11 days of her cycle (30-19=11), to be fertile on days 12–25, and to resume infertility on day 26 (36-10=26). When used to avoid pregnancy, such fertility awareness-based methods have a typical-use failure rate of 25% per year. [18]
Adolescent fertility correlates strongly with poverty in African nations. The highest rate of teenage pregnancy in the world—143 per 1,000 girls aged 15–19 years—is in sub-Saharan Africa. [4] Women in Africa, in general, get married at a much younger age than women elsewhere—leading to earlier pregnancies.
In 2016, adolescent birth rates between the ages of 15-19 was 45 per 1000. [19] In 2014, 1 in 3 experienced sexual violence , and there more than 1.2 million deaths. The top three leading causes of death in females between the ages of 15-19 are maternal conditions 10.1%, self-harm 9.6%, and road conditions 6.1%.