PTSD's factor structure and measurement invariance across subgroups with differing count of trauma types

Ateka A. Contractor, Stephanie V. Caldas, Megan Dolan, Susan Lagdon, Chérie Armour

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

To investigate the effect of the count of traumatizing event (TE) types on post-trauma mental health, several studies have compared posttraumatic stress disorder (PTSD) severity between individuals experiencing one versus multiple TE types. However, the validity of these studies depends on the establishment of measurement invariance of the construct(s) of interest. The current study examined the stability of the most optimal PTSD Model symptom cluster constructs (assessed by the PTSD Checklist for DSM-5 [PCL-5]) across subgroups experiencing one versus multiple TE types. The sample included university students (n = 556) endorsing at least one TE (Stressful Life Events Screening Questionnaire). Using data from the entire sample, results suggest that the PCL-5-assessed Hybrid Model provided a significantly better fit compared to other models. Results also indicated invariance of factor loadings (metric), and intercepts (scalar) for the PCL-5-assessed Hybrid Model factors across subgroups endorsing one (n = 191) versus multiple TE types (n = 365). Our findings thus support the stability, applicability, and meaningful comparison of the PCL-assessed Hybrid Model factor structure (including subscale severity scores) across subgroups experiencing one versus multiple TE types.
Original languageEnglish
JournalPsychiatry Research
Early online date24 Mar 2018
DOIs
Publication statusPublished - 01 Jun 2018

Fingerprint Dive into the research topics of 'PTSD's factor structure and measurement invariance across subgroups with differing count of trauma types'. Together they form a unique fingerprint.

  • Cite this