title: Psychometric properties of the Posttraumatic Stress Disorder Symptom Scale Interview for DSM-5 (PSSI-5).
abstract: Changes to the diagnostic criteria for posttraumatic stress disorder (PTSD) in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) create a need for valid and reliable updated assessment tools. This study examined key psychometric properties (e.g., internal consistency, test-retest reliability, interrater reliability, and convergent and discriminant validity) of the PTSD Symptom Scale Interview for DSM-5 (PSSI-5), a modified version of the PSS-I (PTSD Symptom Scale)-Interview Version for the DSM-IV. Participants were 242 urban community residents, veterans, and college undergraduates, recruited from 3 study sites, who had experienced a DSM-5 Criterion A traumatic event. The PSSI-5 demonstrated good internal consistency (α = .89) and test-retest reliability (r = .87), as well as excellent interrater reliability for the total severity score (intraclass correlation = .98) and interrater agreement for PTSD diagnosis (κ = .84). The PSSI-5 also demonstrated convergent validity with 3 measures of PTSD (i.e., Clinician-Administered PTSD Scale for DSM-5, Posttraumatic Diagnostic Scale for DSM-5, and PTSD Checklist-Specific Version; all rs > .72) and discriminant validity with the Beck Depression Inventory-II and the State-Trait Anxiety Inventory-Trait scale. Receiver operating characteristic analysis yielded a cutoff score of 23 for identifying a probable PTSD diagnosis. Together, these findings indicate that the PSSI-5 is a valid and reliable instrument for assessing PTSD diagnosis and severity. (PsycINFO Database Record
authors.affiliation: Department of Psychiatry, University of Pennsylvania Perelman School of Medicine.
authors.forename: Edna B
authors.initials: EB
authors.lastname: Foa
authors.affiliation: Department of Psychiatry, University of Pennsylvania Perelman School of Medicine.
authors.forename: Carmen P
authors.initials: CP
authors.lastname: McLean
authors.affiliation: Department of Psychiatry, University of Pennsylvania Perelman School of Medicine.
authors.forename: Yinyin
authors.initials: Y
authors.lastname: Zang
authors.affiliation: Department of Psychiatry, University of Pennsylvania Perelman School of Medicine.
authors.forename: Jody
authors.initials: J
authors.lastname: Zhong
authors.affiliation: VA Ann Arbor Healthcare System.
authors.forename: Sheila
authors.initials: S
authors.lastname: Rauch
authors.affiliation: VA Ann Arbor Healthcare System.
authors.forename: Katherine
authors.initials: K
authors.lastname: Porter
authors.affiliation: VA Ann Arbor Healthcare System.
authors.forename: Kelly
authors.initials: K
authors.lastname: Knowles
authors.affiliation: Department of Psychology, University of Texas at Austin.
authors.forename: Mark B
authors.initials: MB
authors.lastname: Powers
authors.affiliation: Department of Psychology, University of Texas at Austin.
authors.forename: Brooke Y
authors.initials: BY
authors.lastname: Kauffman
mesh_terms: D000293:Adolescent; D000328:Adult; D003130:Combat Disorders / Q000175:diagnosis* / Q000523:psychology*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000706:statistics & numerical data*; D012372:ROC Curve; D015203:Reproducibility of Results; D013313:Stress Disorders, Post-Traumatic / Q000175:diagnosis* / Q000523:psychology*; D014728:Veterans / Q000523:psychology*; D055815:Young Adult