Check around and you'll see that nobody has hard numbers. Many people are pretending they do, but they don't. They're just pulling numbers out of their, er, hat.
Hard numbers in this area are hard to come by, understandably. So it comes down to how one interprets the available statistics. What Dr. Wilkie has done is give a logical interpretation.
Dr. Wilkie also has many years of experience as an OB/GYN. Few other commentators here or elsewhere have that. His experience backs up what Akin said.
No matter what the number is, every rape is a horrible crime, and it is certainly difficult for a woman if a pregnancy results. Women who do become pregnant as a result of rape deserve our help and compassion. But this situation is not common, as the Left would have us believe. And ultimately, the number of pregnancies resulting from rapes, in itself, isn't really the point. The real point is that dismembering and destroying an unborn child is wrong.
That's certainly true. Which makes Akin's comment all the more idiotic - he blew an 11 point lead in a Senate race by making a statement that he didn't need to say.