title: A Norwegian version of the Obsessive-Compulsive Inventory-Revised: psychometric properties.
abstract: The aims of this study were to test the psychometric properties of the Norwegian version of the Obsessive-Compulsive Inventory-Revised (OCI-R). The study included a student/community control sample (N = 1167) and a clinical sample (N = 72) with a diagnosis of obsessive-compulsive disorder (OCD). The results indicated a good fit for the six-factor structure of the OCI-R. The mean scores and standard deviations were similar to that of studies from other countries as was the internal consistency. The OCI-R scores were significantly higher in the OCD sample compared to the control sample. All the subscales, except hoarding, were significant predictors of obsessive-compulsive severity, and the OCI-R subscales seemed to be in agreement with the different subtypes of OCD according to DSM-IV. The OCI-R showed meaningful correlations with measures related to obsessive compulsive symptoms. As expected, it showed the strongest correlation with the Yale-Brown Obsessive Compulsive Scale, followed by measures of worry, anxiety, and depression. In summary, the Norwegian OCI-R showed adequate psychometric properties suggesting it could be a suitable measure of obsessive-compulsive symptoms.
authors.affiliation: Department of Psychology, Norwegian University of Science and Technology, Trondheim, Norway. stian.solem@svt.ntnu.no
authors.forename: Stian
authors.initials: S
authors.lastname: Solem
authors.forename: Odin
authors.initials: O
authors.lastname: Hjemdal
authors.forename: Patrick A
authors.initials: PA
authors.lastname: Vogel
authors.forename: Tore C
authors.initials: TC
authors.lastname: Stiles
mesh_terms: D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000175:diagnosis; D003863:Depression / Q000175:diagnosis; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis*; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires