Who obsesses on maps?
Personally thinking about it.. and this is an angle I am not sure even the epidemiology literature has not yet taken up, but like everything else it has to be there are health impacts resulting from past migration patterns. The sheer scale of past migration coupled with the self-selection of those who left clearly left us with some outlier-unique demographics in the nation. It would be reasonable to expect that the same self-selection among those who left vs. those who stayed left us with a whole host of other uniquenesses that would show up in health metrics. But migration impact on health statistics is a topic few have done research on unfortunately. That and I'll say that the first maps the PG up from the series sure seem to me to overlay with income metrics a fair bit which makes sense.
What I did in the earlier post was zoom in on one of the Vulcan project's national maps to get a look at the greater Pittsburgh region.