Nigeyy said:It's obvious then; you are safer wearing a helmet in the States compared to other parts of the world, notably Australia. Or, if you are in an accident wearing a helmet come over here to have it (though you'll have to have health insurance mind you).
The Antipodean studies are based around compulsory helmet wearing and it's effects on overall risk. I find they don't really address the issue of helmet effectivness but legislation effectivness. This study sees to be addressing helmet effectiveness directly and isn't skewed towards examining legislation.
The other interesting thing about the site was an explanation of likely impact speeds; very informative.