I just finished going through this presentation which has been sitting in my queue for quite a while. Frankly, its long (167 slides) but its got some great research
from a huge global sample size in it. I’ve included an embed above but I recommend thumbing through it on the Slideshare site here
as there’s some smaller text on the graphs that is harder to read in the smaller version above. I’ve included highlights below if you don’t feel like going through all the slides but I recommend it anyway.