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Originally Posted by Greg700
Um, I don't believe the effectiveness of birth control measures is calculated in the fashion mentioned above. If it were then the average condom using college student would have several children by graduation.
I believe it is the risk of getting pregnant over a one year period using that particular method, or something to that effect.
I do know that condoms are extremely effective if used properly, but that most people end up becoming somewhat complacent (god knows I do when I have to use those horrible things) and start taking shortcuts or doing things that increase the risk of pregnancy.
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yes all the stats I've seen have been for a year long period.
http://www.advocatesforyouth.org/pub...t/fscondom.htm
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* In one year, only two of every 100 couples who use condoms consistently and correctly will experience an unintended pregnancy—two pregnancies arising from an estimated 8,300 acts of sexual intercourse, for a 0.02 percent per-condom pregnancy rate.[3]
* In one year with perfect use (meaning couples use condoms consistently and correctly at every act of sex), 98 percent of women relying on male condoms will remain pregnancy free. With typical use, 85 percent relying on male condoms will remain pregnancy free.[3]
* In one year with perfect use, 95 percent of women relying on the female condom will remain pregnancy free. With typical use, 79 percent relying on female condoms will remain pregnancy free.[3]
* By comparison, only 15 percent of women using no method of contraception in a year will remain pregnancy free.[3]
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I'm sure you can find more and even original sources if you're interested.