Gifted Issues Discussion homepage Forums Twice Exceptional Percent of 2E kids

Anyone know what is the percent of 2E kids in the normal population? And specifically the percent of HG+ kids that also have a LD?

If for example, a kid with iq >160 occurs 1:10,000 to 100,000 what's the incidence of a kid that's 2E with iq>160 like 1:1,000,000???