Dimensionality of the PTSD Checklist in a Canadian Aboriginal Sample

Abstract

Background and Purpose: The PTSD Checklist–Civilian Version (PCL-C) is a widely used screening instrument measuring posttraumatic stress disorder (PTSD). However, to our knowledge, the factor structure of the PCL-C has not been examined in an Aboriginal population. Considerable research indicates that PTSD symptoms are characterized by 4 factors, with both the “King model” and the “Simms model” supported by the literature. Methods: Using confirmatory factor analysis on the PCL-C, we examined whether these models and the overall scale were supported in an Aboriginal community sample (N = 273). Results: The data supported both models. However, the 4 factors were highly correlated, providing some support for a 1-factor model as well. Conclusions: Our data support use of the PCL-C in Aboriginal health research.