Hi,
i found this at
http://www.4woman.Go
v/faq/contraception.Htm I just thought
it was important for people to know what
kind of failure rates their method of
choice have. We are often told the
theoretical failure rate (ie. In a lab
with perfect use) but not the "typical
use". Just thought i'd share since I
found this very interesting.
~laura
sterilization:
male sterilization: typical use rate of
pregnancy, 0.15%; lowest expected rate of
pregnancy, 0.1%
female sterilization: typical use rate of
pregnancy, 0.5%; lowest expected rate of
pregnancy, 0.5%
hormonal methods:
implant (norplant): typical use rate of
pregnancy, 0.09%; lowest expected rate of
pregnancy, 0.09%
hormone shot (depo-provera): typical use
rate of pregnancy, 0.3%; lowest expected
rate of pregnancy, 0.3%
combined pill (estrogen/progestin):
typical use rate of pregnancy, 5%; lowest
expected rate of pregnancy, 0.1%
minipill (progestin only): typical use
rate of pregnancy, 5%; lowest expected
rate of pregnancy, 0.5%
intrauterine devices (iuds):
copper t: typical use rate of pregnancy,
0.8%; lowest expected rate of pregnancy,
0.6%
progesterone t: typical use rate of
pregnancy, 2%; lowest expected rate of
pregnancy, 1.5%
barrier methods:
male latex condom¹: typical use rate of
pregnancy, 14%; lowest expected rate of
pregnancy, 3%
diaphragm²: typical use rate of
pregnancy, 20%; lowest expected rate of
pregnancy, 9%
vaginal sponge (no previous births)³:
typical use rate of pregnancy, 20%; lowest
expected rate of pregnancy, 9%
vaginal sponge (previous births)³:
typical use rate of pregnancy, 40%; lowest
expected rate of pregnancy, 20%
cervical cap (no previous births)²:
typical use rate of pregnancy, 20%; lowest
expected rate of pregnancy, 9%
cervical cap (previous births)²: typical
use rate of pregnancy, 40%; lowest
expected rate of pregnancy, 26%
female condom: typical use rate of
pregnancy, 21%; lowest expected rate of
pregnancy, 5%
spermicide: (gel, foam, suppository,
film): typical use rate of pregnancy,
26%; lowest expected rate of pregnancy,
6%
natural methods:
withdrawal: typical use rate of
pregnancy, 19%; lowest expected rate of
pregnancy, 4%
natural family planning (calendar,
temperature, cervical mucus): typical use
rate of pregnancy, 25%; lowest expected
rate of pregnancy, 1-9%
no method: typical use rate of pregnancy,
85%; lowest expected rate of pregnancy,
85%
¹without spermicide, ²with spermicide,
³contains spermicide
