A new study has found that Coitus Interruptus (also known as 'pulling out') is about as effective as condoms. Condoms are found to be more effective, but not by much.
With perfect use, condoms have a 2% failure rate and Coitus Interruptus (CI) have a 4% failure rate. While you make look at that and say that condoms are double CI in effectiveness, you may want to consider that they are only two percentage points apart. This is also with perfect use. They get closer when considering typical use.
With typical use, the failure rate of condoms jumps to 17% and the failure rate of CI jumps to 18%. Condoms are still more effective, but not by much even when compared to each other.
Instead using this to boost your opinion regarding the effectiveness of CI, you may want to use this to reflect on just how imperfect condoms are and how often they fail.
"Her studies found that in perfect use -- meaning the man pulls out every time -- withdrawal has a 4 percent failure rate, as compared to condoms, which have a 2 percent failure rate.
"But nobody's perfect," said Jones, who published her commentary in the June issue of Contraception magazine.
In typical use, when used consistently and correctly, coitus interruptus and condoms have an 18 and 17 percent failure rate, respectively."