Background: Despite relatively consistent findings regarding the number of personality pathology domains, differences in domain structure remain. Recently the proposed ICD-11 domains were partially validated in a sample of patients with major depression producing five domains: Detached, Anankastic, Negative Emotional, Antisocial and Borderline. The aim of our study was to attempt to cross-validate these findings in a sample of patients primarily diagnosed with personality disorder (PD).
Subjects and methods: All subjects were assessed by Structured Clinical Interview for the DSM-IV Axis II PD. Exploratory factor analysis (EFA) was applied on fifty seven DSM PD symptoms selected to represent the five proposed domains.
Results: SCID II data were collected from a total of 223 subjects. The EFA extracted five factors. The first factor labeled as borderline-internalizing constituted of borderline together with avoidant and dependent items, the second, labeled as disinhibited/ borderline externalizing, incorporated narcissistic and histrionic items. The other three separate factors in our study labeled as antisocial, anankastic and detached, were less robust.
Conclusions: In our study five personality pathology domains were partly replicated. The most robust findings support the existence of the two factors, borderline-internalizing and disinhibited/borderline externalizing. However, the EFA was performed on a relatively low prevalence symptoms distribution, particularly for antisocial and schizoid factors.