Y
HN Search
Hacker News Search
new
|
comments
|
top
|
jobs
adsjfk
searching PlanetScale…
1.
▲
2.
▲
3.
▲
4.
▲
5.
▲
6.
▲
3 ms
·
1.
▲
by
adsjfk
12y ago
Example: I'd guess that when hormonal birth control fails despite being used perfectly, it could well be related to the person's particular biology. So if it failed for them one year, there'd be a high chance of it failing
2.
▲
by
adsjfk
12y ago
>How the numbers were calculated: The probability that a woman doesn't get pregnant at all over a given period of time is equal to the success rate of her contraceptive method, raised to the power of the number of years she uses tha