The results were sorted by health insurance status, area of residence, race, other indicators of health status and prior use of emergency care in the last year.
In a statement, the ACEP president David Seaberg, MD, said the report validates what ACEP's own surveys have long known.
"This confirms the results of a recent ACEP poll in which 85% of Americans with regular healthcare providers who visited the ED said they could not have waited to see their regular providers. The CDC report draws similar conclusions, even though it excludes the nearly 27% of emergency patients admitted to the hospital who are, by definition, the sickest patients.
"It also excludes seniors who tend to have more complicated health problems and are more likely to be admitted to the hospital from the ED."
The statement added "No matter how we slice and dice the data, the results always say the same thing: people come to the ED because they feel they need to be there. No patient should be self-diagnosing his or her medical condition. They cannot distinguish between discomfort that is a minor problem and discomfort that could be a killer. That is the emergency physician's job."
A CDC report on ED usage in May of 2010 prompted the organization to angrily ask for a more detailed report.