Eur Child Adolesc Psychiatry. 2011 Oct 27.
Prevalence and clinical correlates of tic disorders in a community sample of school-age children.
Tabori Kraft J, Dalsgaard S, Obel C, Thomsen PH, Henriksen TB, Scahill L.
PubMed Abstract
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Children with hyperactivity and CTD were more impaired than subjects with CTD only. Children with CTD and hyperactivity show greater symptom severity across several domains of behavior and overall impairment. In the absence of hyperactivity, children with CTD are at increased risk for emotional difficulties, but not disruptive behavior problems.
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