PEDIATRICS Vol. 124 No. 5 November 2009, pp. 1395-1403 (doi:10.1542/peds.2009-1522)
ARTICLE |
Prevalence of Parent-Reported Diagnosis of Autism Spectrum Disorder Among Children in the US, 2007
a Maternal and Child Health Bureau, Health Resources and Services Administration, US Department of Health and Human Services, Rockville, Maryland
b National Center for Health Statistics, Centers for Disease Control and Prevention, US Department of Health and Human Services, Hyattsville, Maryland
c National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, US Department of Health and Human Services, Atlanta, Georgia
d Center for Child and Adolescent Health Policy, Mass General Hospital for Children, Harvard Medical School, Boston, Massachusetts
OBJECTIVES: The reported increasing prevalence of autism spectrum disorder (ASD) and attendant health and family impact make monitoring of ASD prevalence a public health priority.
METHODS: The prevalence of parent-reported diagnosis of ASD among US children aged 3 to 17 years was estimated from the 2007 National Survey of Children's Health (sample size: 78037). A child was considered to have ASD if a parent/guardian reported that a doctor or other health care provider had ever said that the child had ASD and that the child currently had the condition. The point-prevalence for ASD was calculated for those children meeting both criteria. We examined sociodemographic factors associated with current ASD and with a past (but not current) ASD diagnosis. The health care experiences for children in both ASD groups were explored.
RESULTS: The weighted current ASD point-prevalence was 110 per 10,000. We estimate that 673,000 US children have ASD. Odds of having ASD were 4 times as large for boys than girls. Non-Hispanic (NH) black and multiracial children had lower odds of ASD than NH white children. Nearly 40% of those ever diagnosed with ASD did not currently have the condition; NH black children were more likely than NH white children to not have current ASD. Children in both ASD groups were less likely than children without ASD to receive care within a medical home.
CONCLUSIONS: The observed point-prevalence is higher than previous US estimates. More inclusive survey questions, increased population awareness, and improved screening and identification by providers may partly explain this finding.
Key Words: autism spectrum disorder prevalence children with special health care needs disability national estimates access to health care
Abbreviations: ASD—autism spectrum disorder PDD-NOS—pervasive developmental disorder not otherwise specified ADDM—Autism and Developmental Disabilities Monitoring NSCH—National Survey of Children's Health NHIS—National Health Interview Survey OR—odds ratio CI—confidence interval
Accepted Aug 3, 2009.
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