Assertion: rhythm method's failure rate | /r/HasProperty | 18 percent
Facets:
Source sentences:
text: The failure rate of condoms with typical use is 18 percent, and the pull-out method—a technique whose efficacy is hard to measure, as its implementation is highly subjective—results in about twenty-seven out of one hundred women getting pregnant over a year.
text: Tocce adds that the failure rate with typical use is about 18 percent.