What is the relationship is between a lack of adequate health care and society's disenfranchised (poorer) class?

One of the important parts of the disenfranchisement of
the poorer class through the denial of basic health care is a relatively simple one. 
When you know that you cannot afford to see a doctor and your only avenue of getting
some access to the system is the emergency room, there is no such thing as preventative
care and it adds to the feeling of disenfranchisement as well as the dangers of constant
illness, etc. that were mentioned in the previous
post.

Those of us lucky enough to have insurance also have
to learn how to navigate the system and get what we need out of a very flawed set up but
we learn these things through experience and often with at least some help from the
system.

For people completely shut out of it, everything
about it is alien and it represents nothing but difficulty and the chances of being
bankrupt because of an accident where a wound gets infected,
etc.