● During 2007, the percentage of elderly persons with Medicare and other public insurance reporting one or more cognitive disorders (10.6 percent) was higher than elderly persons with Medicare and any private insurance (4.1 percent) and elderly persons with Medicare only (5.0 percent).
● In 2007, a lower percentage of elderly persons with middle and high income reported one or more cognitive disorders (4.1 percent) than elderly persons that were poor (7.9 percent) or elderly persons that were near poor and had low income (6.7 percent).
In 2007, 5.2 percent of the 38.7 million persons age 65 and older (elderly persons) in the U.S. civilian non-institutionalized population reported having one or more cognitive disorders.
So is education the root cause here? The logic seems to be that better educated people have better jobs and higher income; the ability to afford better insurance and the knowledge to take care of themselves better.