The authors examined how the growing number of elderly Americans would affect the large and increasing part of non-catastrophic outpatient care. Using Census Bureau and nationally representative survey data, researchers quantified the number of ED visits that would occur if the demographic structure of the U.S. population changed, but everything else remained the same. “We observed that it is actually infants and young adults, not the elderly, who account for the largest number of ED visits,” the authors write, and conclude: However, the data do predict increases in visit lengths and the likelihood of hospitalization.