Do hyperactive symptoms matter in ADHD-I restricted phenotype?
The objective of the current study was to evaluate a proposed restrictive inattentive type of Attention Deficit Hyperactivity Disorder (ADHD) by comparing clinical correlates among youths with ADHD inattentive type (ADHD-I) as a function of the number of hyperactivity symptoms presented (none vs. 3 or less) and controls (individuals without ADHD). The sample for this community-based study was comprised of youths aged 6 to 18 years from 12 public schools in Porto Alegre, Brazil. ADHD-I groups had lower levels of adaptive functioning (p < .001) and a higher occurrence of familial ADHD (p < .001) when compared with the controls. There was no significant difference between the two ADHD-I groups. Also, both ADHD-I groups had higher rates of oppositional defiant disorder than controls (p < .001) without significant difference between them. For generalized anxiety disorder and social phobia, only the ADHD-I without HI group showed significant differences compared to controls.
Child and Adolescent Psychiatric Division, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Brazil. mschmitz@orion.ufrgs.br
Marcelo
M
Schmitz
Henrique
H
Ludwig
Luis A
LA
Rohde
D000223:Adaptation, Psychological; D000293:Adolescent; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000453:epidemiology* / Q000523:psychology; D001289:Attention Deficit Disorder with Hyperactivity / Q000145:classification* / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D019958:Attention Deficit and Disruptive Behavior Disorders / Q000145:classification / Q000175:diagnosis; D001938:Brazil / Q000453:epidemiology; D002648:Child; D015897:Comorbidity; D003937:Diagnosis, Differential; D005190:Family / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D010698:Phobic Disorders / Q000175:diagnosis / Q000453:epidemiology; D011595:Psychomotor Agitation / Q000175:diagnosis* / Q000523:psychology; D012494:Sampling Studies