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DSM-IV AD/HD: Confirmatory Factor Models, Prevalence, and Gender and Age Differences Based on Parent and Teacher Ratings of Australian Primary School Children

Published online by Cambridge University Press:  01 February 1999

R. Gomez ,
J. Harvey ,
C. Quick ,
I. Scharer  and
G. Harris
R. Gomez
Affiliation:
University of Ballarat, Victoria, Australia
J. Harvey
Affiliation:
University of Ballarat, Victoria, Australia
C. Quick
Affiliation:
University of Ballarat, Victoria, Australia
I. Scharer
Affiliation:
University of Ballarat, Victoria, Australia
G. Harris
Affiliation:
University of Ballarat, Victoria, Australia
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Abstract

Based on parent and teacher ratings of primary school children on a scale comprising the 18 DSM-IV AD/HD symptoms, this study used confirmatory factor analysis to compare three models: all items in one factor; inattention in one and hyperactivity and impulsivity items in a separate factor; and inattention, hyperactivity, and impulsivity items in three separate factors. It also examined the prevalence rates of the three AD/HD Types, and gender and age differences. Results supported both the two- and three-factor models, with the three-factor model only slightly better than the two-factor model. Based on parent-teacher agreement, the prevalence rates were 1.6, 0.2 and 0.6 % for the Inattentive, Hyperactive- Impulsive, and Combined Types, respectively. Overall, the male to female ratio was 5[ratio ]1, and boys were rated higher than girls by both parents and teachers. Age differences were minimal. The implications of the findings in relation to some of the assumptions made in DSM-IV for AD/HD are discussed.

Keywords

DSM-IV AD/HDconfirmatory factor modelsprevalenceAustralia
Type
Research Article
Information
The Journal of Child Psychology and Psychiatry and Allied Disciplines , Volume 40 , Issue 2 , February 1999 , pp. 265 - 274
Copyright
© 1999 Association for Child Psychology and Psychiatry

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