Borderline Personality Disorder (BPD) diagnosis with the self-report Personality Diagnostic Questionnaire–4+(PDQ-4+): confirmation of the 3-factor structure (original) (raw)

INTRODUCTION The clinical heterogeneity and elevated comorbidity of Borderline Personality Disorder (BPD) have suggested the possible existence of several factors or subtypes of this construct. Studies published to date mainly show that this diagnosis could be represented either as a 1-dimensional model or 3-factor model. However, most of the studies have analyzed the factorial structure of the BPD DSM-IV criteria only using semi-structured interviews. This study has aimed to analyze the factorial structure of BPD DSM-IV criteria used in the self-report PDQ-4+. METHOD A total of 159 psychiatric outpatients with suspicion of BPD diagnosis were evaluated. Confirmatory Factor Analyses (CFA) was performed for BPD criteria in PDQ-4+ and two previously defined structures were examined and compared: a 1-dimensional model and a 3-factor model. RESULTS Both models showed good fit indexes. However, the results of the CFA showed better goodness of fit indexes (χ(2)/gl; CFI; RMSEA; TLI; AIC and...