rhythm method
Noun
Meaning
natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
Kippley, p.111 For these women, the rhythm method formula incorrectly identifies a few fertile days as being in the infertile period.
Even when used perfectly, calendar-based methods, especially the rhythm method, result in a high pregnancy rate among couples intending to avoid pregnancy.
Currently, many fertility awareness teachers consider the rhythm method to have been obsolete for at least 20 years.
Smulders published his work with the Dutch Roman Catholic medical association, and this was the official rhythm method promoted over the next several decades.
This is interpreted as favoring the then-new, more reliable symptoms-based fertility awareness methods over the rhythm method.
When used to avoid pregnancy, the rhythm method has a perfect-use failure rate of up to 9% per year.