Brief communication: criterion validity of the Personality Diagnostic Questionnaire-4+ (PDQ-4+) in a mixed psychiatric sample.
Three hundred consecutively admitted in- and outpatients were administered the Personality Diagnostic Questionnaire-4+ (PDQ-4+). The Structured Clinical Interview for DSM-IV Axis II Personality Disorders, Version 2.0 (SCID-II) was used as the external diagnostic standard for personality disorder (PD) assessment. SCID-II was administered blind to PDQ-4+ scores. Low agreement between PDQ-4+ and SCID-II was observed for both dimensional and categorical PD evaluations. Receiver operating characteristic (ROC) analysis showed a definitively satisfactory discriminatory capability only for two PDQ-4+ PD scales (dependent, and antisocial). In agreement with previous studies, these results showed that PDQ-4+ was not a substitute for a structured diagnostic interview.
Fossati
A
A
Istituto Scientifico Ospedale San Raffaele, Department of Neuropsychiatric Sciences, University of Milan, School of Medicine, Italy.
Maffei
C
C
Bagnato
M
M
Donati
D
D
Donini
M
M
Fiorilli
M
M
Novella
L
L
Ansoldi
M
M
D000328:Adult; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D007406:Interview, Psychological / Q000592:standards; D007558:Italy; D008297:Male; D001523:Mental Disorders / Q000150:complications; D015999:Multivariate Analysis; D010554:Personality Disorders / Q000175:diagnosis*; D010556:Personality Tests / Q000592:standards*; D011594:Psychometrics / Q000592:standards*; D012372:ROC Curve; D015203:Reproducibility of Results; D016037:Single-Blind Method; D011795:Surveys and Questionnaires / Q000592:standards*