We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Stability of ADHD symptoms across age groups: an item response theory analysis of 705 clinically-referred individuals.
- Authors
Kieling, Christian; Chachamovich, Eduardo; Matte, Breno; Bau, Claiton H.; Belmonte-de-Abreu, Paulo; Grevet, Eugenio H.; Rohde, Luis Augusto
- Abstract
Introduction and objectives: ADHD among adults has been increasingly recognized over the last years, despite the difficulties of adapting diagnostic criteria and symptom dimensions to the assessment of these patients. In this study, we compared the performance of a symptom rating scale (SNAP-IV) across age groups. Methods: Baseline assessments of 705 individuals (286 children and adolescents and 419 adults) referred for ADHD treatment in an outpatient clinic setting were analyzed. Item response theory analyses were conducted to identify specific item performance across age and gender groups. Results: Preliminary results indicate a two-factor solution corroborating the inattention and hyperactivity/impulsivity dimensions of ADHD. Three inattention and six hyperactive/impulsive items showed differential item functioning across age groups. Unidimensional analyses revealed a set of five inattention-related items with interval psychometric properties across both age groups. In the hyperactivity/impulsivity domain, however, no single solution was possible, with two final sets of six and four items demonstrating interval properties for children/adolescents and adults, respectively. Discussion: Initial results suggest that items reflecting specific ADHD symptoms have distinct psychometric properties among children/ adolescents and adults.
- Publication
European Child & Adolescent Psychiatry, 2010, Vol 19, pS23
- ISSN
1018-8827
- Publication type
Article
- DOI
10.1007/s00787-010-0117-5