Assertion: rhythm method's failure rate | /r/HasProperty | about 25%
Facets:
value: each year
type: TEMPORAL
value: for typical use
type: OTHER
Source sentences:
text: However, for typical use the failure rate is about 25%.
text: The failure rate for rhythm method is 25 percent each year (with perfect use the rate is still nearly 10 percent).
text: That is why the failure rate for calendar-based methods of birth control is about 25 percent.