MMDad
Lem Putt
According to womenshealth.govShow where you get those #'s..I know it's allot less than.
Male condoms are 84 to 98% effective at preventing pregnancy.
Hatcher RA et al. Contraceptive Technology, 18th rev. ed. New York: Ardent Media, 2004:
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.
I've never heard a number as low as 80%.