Factor Analytic Structure and Cross-Informant Agreement for Childhood Disruptive Behaviour Scale

Attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) co-occur frequently. However, the comorbidity of these two childhood disruptive behavior disorders has not been satisfactorily explained at either a structural or etiological level. The current study evaluates and compares three distinct models to improve understanding of the structural relationship between ADHD and ODD using Urdu translation of parent and teacher versions of Disruptive Behavior Disorders Rating Scale (DBDRS). Participants were 201 teachers and 144 parents of school children who were given parent and teacher versions of the DBDRS. The two factor model obtained in the present study combining the hyperactivity and ODD as single factor, while keeping the inattentive type as a separate factor has shown to be the best fit for parent version in comparison to other suggested models. This may help explain common patterns of comorbidity between ADHD and ODD and also supports the ongoing debate that ADHD-Predominantly Inattentive type must be considered a distinct disorder and not as subtype of ADHD.