Blood Type?

[Sean MacEntee]

According to this: http://bloodcenter.stanford.edu/about_blood/blood_types.html

There's about a 50.3% chance someones blood type is:

'O Rh Positive' or 'O RH Negative' or 'A Rh Negative'

I think it's a sound question but those stats i'm using are US only (can't find global stats)...