title: Pattern of comorbidity among anxious and odd personality disorders: the case of obsessive-compulsive personality disorder.
abstract: The aim of this study was to examine the pattern of comorbidity among obsessive-compulsive personality disorder (OCPD) and other personality disorders (PDs) in a sample of 400 psychiatric inpatients. PDs were assessed using the Semistructured Clinical Interview for DSM-III-R Personality Disorders (SCID-II). Odds ratios (ORs) were calculated to determine significant comorbidity among OCPD and other axis II disorders. The most elevated odds ratios were found for the cooccurrence of OCPD with cluster A PDs (the "odd" PDs, or paranoid and schizoid PDs). These results are consistent with those of previous studies showing a higher cooccurrence of OCPD with cluster A than with cluster C ("anxious") PDs. In light of these observations, issues associated with the nosologic status of OCPD within the Diagnostic and Statistical Manual of Mental Disorders clustering system remain unsettled.
authors.affiliation: Department of Experimental Medicine, Department of Psychiatry, University of L'Aquila, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Rossi
authors.forename: M G
authors.initials: MG
authors.lastname: Marinangeli
authors.forename: G
authors.initials: G
authors.lastname: Butti
authors.forename: A
authors.initials: A
authors.lastname: Kalyvoka
authors.forename: C
authors.initials: C
authors.lastname: Petruzzi