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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% ...
There is limited evidence about the effectiveness of fertility awareness family planning methods, some of which use basal body temperature as one component. [1] About 24% of women who use any type of fertility awareness program become pregnant during the first year, compared to about 85% of sexually active women who are not trying to prevent a ...
Post-ovulation methods (i.e., abstaining from intercourse from menstruation until after ovulation) have a method failure rate of 1% per year. The symptothermal method has a method failure rate of 2% per year. Cervical mucus–only methods have a method failure rate of 3% per year. Calendar rhythm has a method failure rate of 9% per year.
Two well-known mucus-only methods are the Billings ovulation method and the Creighton Model FertilityCare System. If two or more signs are tracked, the method is referred to as a symptothermal method. Two popular symptothermal systems are taught by the Couple to Couple League and the Fertility Awareness Method (FAM) with Toni Weschler. A study ...
Various methods are known as the Knaus–Ogino method and the rhythm method. The standard days method is also considered a calendar-based method, because when using it, a woman tracks the days of her menstrual cycle without observing her physical fertility signs. The standard days method is based on a fixed formula taking into consideration the ...
Ovulation is an important part of the menstrual cycle in female vertebrates where the egg cells are released from the ovaries as part of the ovarian cycle.In female humans ovulation typically occurs near the midpoint in the menstrual cycle and after the follicular phase.
Typical use of this method is associated with a pregnancy rate of 1 to 22%. [1] A World Health Organization study found that 15% is caused by a conscious departure from method rules. [1] The percentage of people who stop using the method after a year is 1–24%. [1] Perfect use has been estimated to result in pregnancy in 0.5–3%.
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