Out of 100 couples each year that use natural family planning methods, such as fertility awareness, up to 1 - 9 women may become pregnant.
Natural family planning, also known as fertility awareness, is a strategy or an approach of using contraception in which a woman analyzes and records several fertility symptoms throughout her menstrual cycle to determine when she is most likely to become pregnant.
According to the National Health Service NHS records, 1 - 9 in 100 woman who employs the natural family planning method usually become pregnant in 1 year.
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