Yeah it seems silly. Why is college the primary group factor…? Is there some sort of health effect of sitting college classrooms for 5 years? Seems unlikely.

Yeah it seems silly. Why is college the primary group factor…? Is there some sort of health effect of sitting college classrooms for 5 years? Seems unlikely. College education is highly associated and predicted by income/access to wealth. Wealth inequality seems like a more likely explanation. Not seeing how they controlled for that across college vs non-college groups.