alexa Does actigraphy differentiate ADHD subtypes in a clinical research setting?


Journal of Child and Adolescent Behavior

Author(s): Dane AV, Schachar RJ, Tannock R

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Abstract OBJECTIVE: To compare subtypes of attention-deficit/hyperactivity disorder (ADHD) (predominantly inattentive and combined types) and a comparison group on an objective measure of activity level (actigraphy). METHOD: Actigraphs were worn by 64 children (49 boys, 15 girls) during a full-day clinical diagnostic assessment; 20 subjects had a diagnosis of ADHD predominantly inattentive type, 22 had ADHD combined type, and 22 were non-ADHD controls. Mean actigraph scores were calculated for two 2-hour intervals, comprising, respectively, a psychometric evaluation in the morning and the completion of a speech and language assessment and research measures in the afternoon. RESULTS: There were no significant group differences in activity level in the morning session. During the afternoon session, children with ADHD were significantly more active than controls, but there were no differences between ADHD subtypes. CONCLUSIONS: These data partially support specifications in the DSM-IV regarding hyperactivity in ADHD; however, they also indicate that situational and/or temporal factors may affect the degree to which hyperactivity is expressed. Furthermore, the findings contradict specifications in the DSM-IV that suggest that children with ADHD combined type should be more hyperactive than children with ADHD predominantly inattentive type. This article was published in J Am Acad Child Adolesc Psychiatry and referenced in Journal of Child and Adolescent Behavior

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