[VeritatisSplendor]

I don't think you're right on the effectiveness of perfect condom use. A Johns Hopkins publications puts it at 97%, with average use at 86%.

http://www.infoforhealth.org/pr/h9/h9chap4.shtml

Mrs VS

[Campion]

I don't think you're right on the effectiveness of perfect condom use. A Johns Hopkins publications puts it at 97%, with average use at 86%.

Thank you for the correction.

Of course, "perfect use" is probably a pretty unrealistic situation or expectation for most people.

Symptothermal NFP has a perfect use effectiveness above 98%, BTW.