» Thu Sep 01, 2011 11:23 pm
I am in the most common grouping, the O Rh+ group. I've donated blood exactly 25 times - but they won't let me anymore because I've got insulin-dependent diabetes, which annoys me greatly. And no, I've had no need to receive any blood.
By the way, if you're looking to see blood type demographics, there's all sorts of internet resources for it, and they often break things down geographically or culturally, too.