If the recent trend holds, 20 percent of adults in the U.S. will visit an emergency room this year.
For adults, the most common reason for a trip to the ER is injury, but for children it's illness, according to the Centers for Disease Control and Prevention.
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When's the last time you were in an emergency room? Were you hurt or sick? Or were you there with a family member?
How long was the wait? Did you end up being admitted to the hospital?