An interesting article from the Annals of Emergency Medicine about who it is exactly crowding the Waiting Room at the ER. It isn't the uninsured. Their visit rates over all are slightly declining. It is those referred there by their primary care physicians.
Here is the full article or if you only have time for a summary, Journal of EMS (JEMS) does a good summary here.
This fits with my retrospective informal view as well.
