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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% ...
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]
The failure rate of a copper IUD is approximately 0.8% and can prevent pregnancy for up to 10 years. The hormonal IUD (also known as levonorgestrel intrauterine system or LNg IUD) releases a small amount of the hormone called progestin that can prevent pregnancy for 3–8 years with a failure rate of 0.1-0.4%. [1]
Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent pregnancy. [1] [2] Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. [3]
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%.
The journal is abstracted and indexed by the Science Citation Index Expanded, Scopus, MEDLINE, EMBASE, and PsycINFO.According to the Journal Citation Reports, the journal has a 2019 impact factor of 3.9, ranking it 9th out of 128 journals in the category "Pediatrics", [1] and 30th out of 193 journals in the category of "Public, Environmental and Occupational Health" (Sciences edition).
The birth rates for Hispanic and African-American teens were more than double those of European-American teens, [9] while Asian-American adolescents have the lowest pregnancy and birth rates of all. [3] As of 2015, New Mexico, Texas, Oklahoma, Arkansas, Louisiana, and Mississippi had the highest adolescent birth rates in the Union. (See map.)