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Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero.
J Abnorm Psychol. 2007 May; 116(2):329-41.JA

Abstract

Although posttraumatic stress disorder (PTSD) factor analytic research has yielded little support for the DSM-IV 3-factor model of reexperiencing, avoidance, and hyperarousal symptoms, no clear consensus regarding alternative models has emerged. One possible explanation is differential instrumentation across studies. In the present study, the authors used confirmatory factor analysis to compare a self-report measure, the PTSD Checklist (PCL), and a structured clinical interview, the Clinician-Administered PTSD Scale (CAPS), in 2,960 utility workers exposed to the World Trade Center Ground Zero site. Although two 4-factor models fit adequately for each measure, the latent structure of the PCL was slightly better represented by correlated reexperiencing, avoidance, dysphoria, and hyperarousal factors, whereas that of the CAPS was slightly better represented by correlated reexperiencing, avoidance, emotional numbing, and hyperarousal factors. After accounting for method variance, the model specifying dysphoria as a distinct factor achieved slightly better fit. Patterns of correlations with external variables provided additional support for the dysphoria model. Implications regarding the underlying structure of PTSD are discussed.

Authors+Show Affiliations

Palmieri PA
Center for the Treatment and Study of Traumatic Stress and Department of Psychiatry, St. Thomas Hospital, Summa Health System, Akron, OH 44310, USA. palmierp@summa-health.org
Weathers FW
No affiliation info available
Difede J
No affiliation info available
King DW
No affiliation info available

MeSH

AdolescentAdultAgedFactor Analysis, StatisticalFemaleHumansMaleMass ScreeningMiddle AgedNew York CityOccupational DiseasesPersonality AssessmentPersonality InventoryPsychometricsRelief WorkSeptember 11 Terrorist AttacksStatistics as TopicStress Disorders, Post-Traumatic

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17516765

Citation

Palmieri, Patrick A., et al. "Confirmatory Factor Analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in Disaster Workers Exposed to the World Trade Center Ground Zero." Journal of Abnormal Psychology, vol. 116, no. 2, 2007, pp. 329-41.
Palmieri PA, Weathers FW, Difede J, et al. Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero. J Abnorm Psychol. 2007;116(2):329-41.
Palmieri, P. A., Weathers, F. W., Difede, J., & King, D. W. (2007). Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero. Journal of Abnormal Psychology, 116(2), 329-41.
Palmieri PA, et al. Confirmatory Factor Analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in Disaster Workers Exposed to the World Trade Center Ground Zero. J Abnorm Psychol. 2007;116(2):329-41. PubMed PMID: 17516765.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero. AU - Palmieri,Patrick A, AU - Weathers,Frank W, AU - Difede,JoAnn, AU - King,Dainel W, PY - 2007/5/23/pubmed PY - 2007/7/17/medline PY - 2007/5/23/entrez SP - 329 EP - 41 JF - Journal of abnormal psychology JO - J Abnorm Psychol VL - 116 IS - 2 N2 - Although posttraumatic stress disorder (PTSD) factor analytic research has yielded little support for the DSM-IV 3-factor model of reexperiencing, avoidance, and hyperarousal symptoms, no clear consensus regarding alternative models has emerged. One possible explanation is differential instrumentation across studies. In the present study, the authors used confirmatory factor analysis to compare a self-report measure, the PTSD Checklist (PCL), and a structured clinical interview, the Clinician-Administered PTSD Scale (CAPS), in 2,960 utility workers exposed to the World Trade Center Ground Zero site. Although two 4-factor models fit adequately for each measure, the latent structure of the PCL was slightly better represented by correlated reexperiencing, avoidance, dysphoria, and hyperarousal factors, whereas that of the CAPS was slightly better represented by correlated reexperiencing, avoidance, emotional numbing, and hyperarousal factors. After accounting for method variance, the model specifying dysphoria as a distinct factor achieved slightly better fit. Patterns of correlations with external variables provided additional support for the dysphoria model. Implications regarding the underlying structure of PTSD are discussed. SN - 0021-843X UR - https://www.unboundmedicine.com/medline/citation/17516765/Confirmatory_factor_analysis_of_the_PTSD_Checklist_and_the_Clinician_Administered_PTSD_Scale_in_disaster_workers_exposed_to_the_World_Trade_Center_Ground_Zero_ DB - PRIME DP - Unbound Medicine ER -