From the Disability Statistics Center:
An estimated 1.6 million Americans residing outside of institutions use wheelchairs, according to 199495 data from the National Health Interview Survey on Disability (NHIS-D). Most (1.5 million) use manual devices, with only 155,000 people using electric wheelchairs.The footnotes tell us: "There are also an estimated 142,000 scooter users, for a total of 1.7 million users of wheelchairs or scooters."
I'm not sure why scooter users are excluded from the 155,000 since many people use scooters as wheelchairs rather than for very long distances only. I'm curious about how the sampling was done and how part-time use counts since many people do not need wheelchairs in their homes but do need them outside their homes; I am assuming that temporary use was excluded, though maybe it shouldn't be since this population also needs accommodation.
But basically, there are at least 2 million wheelchair and scooter users whom we can expect to see out and about regularly (and many more that are invisible to us), and probably that can be multiplied several times more if you include temporary disability. Most use manual wheelchairs, though I have to wonder if more don't need power wheelchairs.
-0.4 of the working age population uses a wheelchair. Given that some people may be unable to work because of health and that scooter use isn't added in, that means we should expect at least 1 in every 300 employees to use a wheelchair. Again, maybe far more if you include temporary use. And we should see a far higher percentage than 1/300 employees with a major disability since there are many manifestations of disability.
-About 80% of wheelchair users perceive themselves as having a disability.
-Women are more likely to use power chairs (limited upper body strength?).
Rather than saying "educational attainment is low," I'd suggest that barriers to education still exist, both physical and attitudinal.
One table can be used to address public misconception of wheelchair users as unable to move or walk at all, and combined are 5 times more common than paralysis or amputation. Of course there is also partial paralysis, people with MS may be able to walk some, and some people with stroke may be able to ambulate a short distance. Surprisingly, muscular dystrophy, ALS, and similar diseases don't even show up in the statistics--I hope people were self-reporting rather than offered a list of options.