Objective: This study compares teacher-reported prevalence rates for disruptive behavior disorders using DSM-IV, DSM-III-R, and DSM-III criteria within the same population of elementary school students and examines the relationships between DSM "subtypes" and academic performance, perceived behavior problems, and demographic variables.
Method: Teacher rating scales were obtained on 1,077 students in five rural and five urban public schools in Regensburg, Germany. Rating scales included DSM-III-R items (attention-deficit hyperactivity disorder, oppositional defiant disorder, conduct disorder), DSM-IV items (attention-deficit/hyperactivity disorders [AD/HDs], oppositional defiant disorder), and DSM-III items (attention deficit disorder, with and without hyperactivity). Factor analyses of significance were performed.
Results: Overall prevalence for attention deficit disorders increased from 9.6% (DSM-III) to 17.8% (DSM-IV) primarily because of new cases identified as AD/HD-AD (inattentive type) and to a lesser degree, AD/HD-HI (hyperactive-impulsive type). Inattention in any subtype was associated with academic problems, and perceived behavior problems were associated with more than 80% of the cases that included hyperactivity-impulsivity. DSM-IV AD/HD subtypes showed significant behavioral, academic, and demographic differences.
Conclusion: Application of DSM-IV criteria increased total AD/HD prevalence rates by 64% and identified the majority of children with academic and/or behavioral dysfunction. The data show significant heterogeneity between the subtypes and imply that many children screened into these subtypes require further evaluation to ensure appropriate management.