David_Gerard comments on Public Service Announcement Collection - Less Wrong

37 Post author: Eliezer_Yudkowsky 27 June 2013 05:20PM

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Comment author: Epiphany 28 June 2013 01:54:17AM *  2 points [-]

Considering the widespread misconceptions about condom efficacy rates, that they've made a decently effective alternative more affordable is excellent news!

If you are not familiar with the misconceptions, I will briefly explain:

The condom boxes say there's a 2% failure rate. That's 2% per year. Considering that most people are sexually active for far more than one year, that 2% rate is completely meaningless.

Furthermore, that's for perfect use. The actual way people use condoms, the rate of failure can be (an average of) 15% per year.

I tried finding studies on condoms that ran longer than one year, but couldn't find any. However, a survey was done that gives us an idea of the aftermath of this:

“Three hundred four women (78%) had used condoms for an aggregate total of 1178 years (average=3.9 years per woman; range=1 month-25 years). Seventy-eight women (25.6%) reported becoming pregnant while using condoms”

In not even four years, more than one in four of them became pregnant.

http://www.jfponline.com/Pages.asp?AID=2603

Unfortunately, this information is likely to cause anyone reading it to be at an evolutionary disadvantage, therefore it may make sense to spread the word as much as possible and remember to tell people who are dissimilar to yourself.

Comment author: David_Gerard 28 June 2013 09:27:06AM 0 points [-]

Please cite your sources for those numbers, they look like the ridiculously fudged one Catholic sources come up with.

Comment author: Epiphany 28 June 2013 10:45:13AM *  1 point [-]

Okay, I understand your alarm - you're probably thinking something along the lines of WTF, you're saying condoms aren't effective, why are you contradicting sex ed? If you want one quick reference to show you why you should be concerned about this, the Journal of Family Practice published a research survey that revealed the aftermath of these condom myths. I added it to the comment you were responding to. As for why I said what I said in the last comment: I tried finding a condom study that ran for longer than a year. I couldn't find one anywhere. The one year studies gave failure rates that ranged between 2% and 15%. Those figures can be found at Pubmed if you search for condom efficacy.