Emergency Department Use in the Country's Five Most Populous States and the Total United States, 2012.

KEY FINDINGS: Data from the National Hospital Ambulatory Medical Care Survey, 2012 •In 2012, the emergency department (ED) visit rate in the United States was 42 visits per 100 persons. •The ED visit rate among the five most populous states ranged from 37 visits per 100 persons in New York to 49 visits per 100 persons in Texas. •The percentage of ED visits resulting in admission to the same hospital was higher in California (16%) and Florida (17%) than was observed nationally (11%). •The percentage of visits to EDs located in metropolitan statistical areas was higher in California (98%), Florida (97%), and New York (92%) than was observed nationally (85%).