Eli5: Condom Effectiveness

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What does it mean when the statistics say that condoms are, at best, 98% effective.

It sounds like 1/50 times a condom is used, it won’t prevent pregnancy. But this doesn’t seem right because those stats wouldn’t be worth the risk.

In: 1235

18 Answers

Anonymous 0 Comments

50 couples using a new condom every time as their sole contraception, after 1 year, one of those couples will get pregnant.

It’s not 2% after using a single condom. It’s 2% after a year of using a new condom every time that they have sex.

Edit: clarified so people stop making the same comment about using the same condom for a year.

Anonymous 0 Comments

The statistic means that if a couple use condoms for a year, there is a 2% chance of pregnancy during the year

Anonymous 0 Comments

2% is thr people who break the condom

🙂

Anonymous 0 Comments

Just to add, the 98% is with “perfect use”. More “typical use” effectiveness is anywhere from 80-85% effective.

Not great.

Anonymous 0 Comments

Effectiveness statistics are not per use. In the 95% statistic given, this means that five couples out of one hundred will have a pregnancy during a year even if they use condoms perfectly.

Anonymous 0 Comments

Sorry, but what risk do you perceive to be associated with condom use?

Anonymous 0 Comments

After seeing how some people wore masks during covid I am surprised the effectiveness is not much much lower.

Anonymous 0 Comments

If they said 100% then people will chase the manufacturer for every pregnancy that happens when they were “using a condom” it’s much easier for them to say 98% to account for people using them wrong, condoms breaking, the occasional defective one etc…

I had a vasectomy a few years back and I’m technically 98% infertile even though my pipes are totally severed

Anonymous 0 Comments

I’ve experienced condoms breaking several times. We we’re on the pill, so t’was all good, but still freaky.

So to all my bros out there: Find one that fits! Too small or too big, doesn’t matter, both is bad

Anonymous 0 Comments

I had a room-mate once. She was really cool, did tech for theatre productions and indie bands. We were close and she confided a lot to me (and me to her.)

I’m not judging here, but she, in her 20’s, had three abortions. To me, she admitted that sometimes she wants sex without a condom. To her doctor, when she needed an abortion, she said that “We used condoms, it must have failed.”

Again, I’m not judging, and we all have a right to our bodies. That said, she’s one of the 2% failure rate of condoms.

To the statisticians out there, failure rate is always self-reported. Take that as you will.