Faculty Collaboration Database

Exploring the gold-standard: Evidence for a two-factor model of the Clinician Administered PTSD Scale for the DSM-5. Psychol Trauma 2018 Sep;10(5):551-558

Date

08/11/2017

Pubmed ID

28795824

Pubmed Central ID

PMC5809239

DOI

10.1037/tra0000310

Scopus ID

2-s2.0-85027554044 (requires institutional sign-in at Scopus site)   29 Citations

Abstract

OBJECTIVE: The latent factor structure of posttraumatic stress disorder (PTSD) remains a source of considerable variability. The current study compared several a priori factor structures, as well as a novel 2-factor structure of posttraumatic psychological distress as measured by the Clinician Administered PTSD scale for the DSM-5 (CAPS-5). In addition, variability in diagnostic rates according to the divergent DSM-5 and ICD-11 criteria were explored.

METHOD: The setting for this study was a Level 1 trauma center in a U.S. metropolitan city. Data were pooled from 2 studies (N = 309) and participants were administered the CAPS-5 at 1 (n = 139) or 6 months postinjury (n = 170). Confirmatory factor analysis (CFA) was used to compare several factor models, and prevalence rates based on DSM-5 and ICD-11 criteria were compared via z tests and kappa.

RESULTS: CFAs of 5 factor structures indicated good fit for all models. A novel 2-factor model based on competing models of PTSD symptoms and modification indices was then tested. The 2-factor model of the CAPS-5 performed as well or better on most indices compared to a 7-factor hybrid. Comparisons of PTSD prevalence rates found no significant differences, but agreement was variable.

CONCLUSIONS: These findings indicate that the CAPS-5 can be seen as measuring 2 distinct phenomena: posttraumatic stress disorder and general posttraumatic dysphoria. This is an important contribution to the current debate on which latent factors constitute PTSD and may reduce discordance. (PsycINFO Database Record

Author List

Hunt JC, Chesney SA, Jorgensen TD, Schumann NR, deRoon-Cassini TA

Author

Terri A. deRoon Cassini PhD Center Director, Professor in the Surgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adult
Diagnostic and Statistical Manual of Mental Disorders
Factor Analysis, Statistical
Female
Humans
Male
Physicians
Stress Disorders, Post-Traumatic