Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
From the 2007 National Survey of Children's Health:
"Sometimes a child's doctor or other health care provider will ask a parent to fill out a questionnaire at home or during their child's visit. During the past 12 months, did a doctor or other health care provider have you fill out a questionnaire about specific concerns or observations you may have about (Specific Child)'s developmental, communication or social behaviors?
Did this questionnaire ask about your concerns or observations about how (Specific Child) talks or makes speech sounds?
Did this questionnaire ask about your concerns or observations about how (Specific Child) interacts with you and others?
Did this questionnaire ask about your concerns or observations about words and phrases (Specific Child) uses and understands?
Did this questionnaire ask about your concerns or observations about how (Specific Child) behaves and gets along with you and others?
Autism Spectrum Disorders (ASD) are defined as a constellation of behaviors indicating social, communicative, and behavioral impairment or abnormalities. The essential features of ASD are (a) impaired reciprocal social interactions, (b) delayed or unusual communication styles, and (c) restricted or repetitive behavior patterns.
A child is included as a confirmed case of ASD if he or she displays behaviors (as described by a doctor or other health care provider) consistent with the Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV) diagnostic criteria for Autistic Disorder, Pervasive Developmental Disorder-Not Otherwise Specified (including Atypical Autism), or Asperger's Disorder. Behavioral descriptions are reviewed by autism experts using a coding scheme based on DSM-IV criteria to determine autism case status.
Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.
The 2007 baseline was revised from 19.5% to 22.6% due to a change in methodology. The target was adjusted proportionally from 21.5% to 24.9%.
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