Our organization goes with people 55-plus, but I think we generally accept that the official definition is 65-plus.
In terms of disabilities, there's such a range. For anyone who has to walk with a cane in the winter to a lockbox a few blocks away from their home, that's a huge impediment. It's not necessarily someone with a severe disability, although those people are even more disadvantaged.
I think there's too much of a range to describe it.