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Thread: Birth control failure percentages

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    Birth control failure percentages

    What exactly do the percentages given for bc failure rates mean? For instance, if a certain method is reported as 99% effective, does that mean she'll get pregnant once out of every 100 times? Does it have to do with the percent of people who use it correctly? Does it mean that 1% of the couples who use that method correctly for a certain number of years will get pregnant anyway? Or am I missing the meaning completely?

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    Platinum Member poetryandlyrics's Avatar
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    The failure rate is for the people who don't use it correctly by forgetting a dose or not taking it by the same time everyday. It's for them. But there are also a very small group of women (rare, but you have them -- I know one) that birth control simply does not work on them.

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    No form of birth control is foolproof ,double up. Also too with the pill form of birth control if she is taking antibiotics it can make the pill ineffective. That is something that nobody tells you. My step sister got pregnant twice that way because she didn't know.

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    Platinum Member Moontiger's Avatar
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    If your worried then use two forms of birth control and have her keep track of when she is fertile and avoid having sex on those days (yes, there is an app for that).

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    Super Moderator annie24's Avatar
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    99 out of 100 is for correct usage.

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    Thanks for the replies. But also, condoms have a listed failure rate, which would not apply to a missed pill or dosage, or timing, etc. The method in use in my particular situation is an IUD, the percentage of which I'm not sure of. But I was just wondering what the number means, whatever it happens to be. (Something like 1 out of 1000? Maybe better?)

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    You can get pregnant with an IUD as well. There was a member on this forum that got pregnant with an IUD not too long ago. I also knew another woman personally who got pregnant with an IUD. It does happen. Remember nothing is foolproof aside from no sex.

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    Platinum Member Moontiger's Avatar
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    Originally Posted by Vince99
    Thanks for the replies. But also, condoms have a listed failure rate, which would not apply to a missed pill or dosage, or timing, etc. The method in use in my particular situation is an IUD, the percentage of which I'm not sure of. But I was just wondering what the number means, whatever it happens to be. (Something like 1 out of 1000? Maybe better?)
    You can get pregnant even if you have an IUD or are on any other kind of birth control. And, just to be clear is not a "you will be fine 99 time and get pregnant as soon as you have sex 100 times" Just because you do or do not get pregnant at X time does not effect if you will get pregnant at Y time.

    Use the IUD, use a condom, and keep track of the fertility cycle and you will be pretty safe.

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    Super Moderator annie24's Avatar
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    go to this website for more information on what failure rates mean.

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    Silver Member SapphireNoir10's Avatar
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    I got pregnant on the pill due to antibiotics and not being very careful taking them. I'd got away with being a little careless for 6 years and thought itd never happen to me but it did.

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