quickstats: percentage of hospitalizations after emergency department visits resulting from illness and injury among persons aged 18 years and under, by age group national hospital ambulatory medical care survey, united states, 2007 2010 /

During 2007-2010,emergency department visits by children resulting in hospital admission were more likely to be related to illness (78%) than injury (22%). This sample applied to persons aged 0-4 years, 5-12 years, and 13-18 years,with the greatest difference observed among children aged 0-4 years, for whom 84% of visits resulting in hospital admission were related to illness, or compared with only 16% related to injury.

Source: cdc.gov