The National Health Interview Survey on Disability (NHIS-D) describes the U.S. population of children with mental or emotional problems, as well as selected behavioral functional limitations related to paying attention, school behavior and communicating and getting along with others. Children who had these problems or limitations were included in the "Disability Group," while those without were in the "Reference Group."
Using this data, 8.2% of civilian, non-institutionalized children age 5-17 years old in the United States (4.1 million children) were estimated to be in the "Disability Group." Of these children, 2.8 million are boys, while 1.3 million are girls.
Within the Disability Group, 54.3% (an estimated 2.2 million children) have functional limitations only, 32.8% (1.3 million) have functional limitations and mental or emotional problems, and 12.9% (529,000) have mental or emotional problems only.
Source: Colpe (2000)
Surveys: National Health Interview Survey on Disability (NHIS-D), 1994-96