Originally Posted by user_none
Which, by extension, might mean something about the type of person that is more likely to be a reader.
My father-in-law is a voracious and most learned reader. However he left school early and after spending time in the army, became a fully qualified fitter and turner.
so though he does not slot into your poll regarding level of education (achieving a trade diploma), reading is certainly not limited to the level of education one achieves.
I know some pretty dumb, unimaginative and uninformed professionals, both within my profession and without!