title: Psychometric analysis of the Yale-Brown Obsessive-Compulsive Scale Second Edition Symptom Checklist.
abstract: The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) was recently revised to address several clinical and conceptual issues. The resultant measure, named the Yale-Brown Obsessive-Compulsive Scale-Second Edition, consists of two primary scales: the Severity Scale and the Symptom Checklist. Although the Severity Scale has been the subject of a comprehensive psychometric analysis, no data have been reported on the psychometric properties of the Y-BOCS-II Symptom Checklist (Y-BOCS-II-SC). Accordingly, in the present study, clinician ratings on the Y-BOCS-II-SC for 130 patients with obsessive-compulsive disorder (OCD) were examined on a number of validity and reliability indices. Partially consistent with past factor analytic studies of the Y-BOCS Symptom Checklist, the Y-BOCS-II-SC yielded four factors representing symmetry/ordering, contamination/washing, hoarding, and sexual/religious/aggression dimensions; checking rituals cross-loaded with other dimensions. Generally, the Y-BOCS-II-SC dimensions were internally consistent and rated stably across raters and over a short interval. The Y-BOCS-II-SC symptom dimensions showed good convergence with self-reported obsessive-compulsive symptoms, and were at best moderately associated with divergent measures (e.g., OCD symptom severity, depressive symptoms, and symptoms of anxiety). Overall, the Y-BOCS-II-SC shows good psychometric properties; we highlight several domains in which the Y-BOCS-II-SC may have clinical and research utility, as well as several areas for future study.
authors.affiliation: Department of Pediatrics, University of South Florida, St. Petersburg, FL 33701, USA. estorch@health.usf.edu
authors.forename: Eric A
authors.initials: EA
authors.lastname: Storch
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Larson
authors.forename: Lawrence H
authors.initials: LH
authors.lastname: Price
authors.forename: Steven A
authors.initials: SA
authors.lastname: Rasmussen
authors.forename: Tanya K
authors.initials: TK
authors.lastname: Murphy
authors.forename: Wayne K
authors.initials: WK
authors.lastname: Goodman
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis*; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires