Birth Control Base

About six out of ten pregnancies in the United States are unplanned, according to the Institute of Medicine. Many experts believe that the high unintended pregnancy due to ignorance of contraception. But it is important to remember that any form of contraception is 100% effective in preventing pregnancy. This efficiency statistics.

Tubal ligation and vasectomy procedures are probably the most effective means of contraception prevent pregnancy more than 99.5 percent of the time. Intrauterine devices or IUDs, fails to prevent pregnancy for about 1 to 2 percent of women who use them for a year. For women injectable contraceptives, hormones or hormone implants, has almost the same efficiency, but these hormones are at increased risk of developing dangerous blood clots. So make birth control pills and the pills are slightly less effective at preventing pregnancy. About 5 percent of women taking oral contraceptives for one year will get pregnant by mistake. The typical use of condoms has an unwanted pregnancy to about 14 percent per year, and to design for women using the sponge and the membrane is about 20 percent.

"Plan B" emergency method of birth control, often called the morning-after pill prevents pregnancy by 75 percent of cases if taken within 72 hours of unprotected sex, but more effective if started within 24 hours. -Sean Kenniff, MD