A handful per 200 in 3 years =
typical failure rate of 2 - 3 % within 2 or 3 years?
Guttmacher does not list the specific
typical failure rates for those methods; it only has the «perfect use» failure rate.
Not exact matches
According to Tomasz Tunguz, a partner at Redpoint Ventures, «
Typical portfolio company
failure rates across the industry defined as either shutdowns or returning capital are roughly 40 % -50 %.»
Consider that if birth control pills have an 8 \ %
typical use
failure rate, we can expect eight of 100 women on the pill will get pregnant each year.
-
Failure rate statistics provided by the Gut - tmacher Inst - itute (perfect use and
typical rates).
The most effective forms of contraception, ranked by «Perfect use» as opposed to the
typical / actual
failure rate noted previously.
However, the method
failure rate increases to 18 % with
typical use.
In a
typical year, the county's environmental health division receives 300 to 400 reports of malfunctioning septic systems; this year's
failure rate is expected to be significantly higher.
Women with conditions that make pregnancy an unacceptable risk should be advised that the lactational amenorrhea method might not be appropriate for them because of its relatively higher
typical - use
failure rates.
For comparison, birth control pills have a
failure rate of about 9 percent, and condoms have a
failure rate of 18 percent, in a year of
typical use, according to Planned Parenthood.