title: A systematic literature review of PTSD's latent structure in the Diagnostic and Statistical Manual of Mental Disorders: DSM-IV to DSM-5.
abstract: The factor structure of posttraumatic stress disorder (PTSD) has been widely researched, but consensus regarding the exact number and nature of factors is yet to be reached. The aim of the current study was to systematically review the extant literature on PTSD's latent structure in the Diagnostic and Statistical Manual of Mental Disorders (DSM) in order to identify the best-fitting model. One hundred and twelve research papers published after 1994 using confirmatory factor analysis and DSM-based measures of PTSD were included in the review. In the DSM-IV literature, four-factor models received substantial support, but the five-factor Dysphoric arousal model demonstrated the best fit, regardless of gender, measurement instrument or trauma type. The recently proposed DSM-5 PTSD model was found to be a good representation of PTSD's latent structure, but studies analysing the six- and seven-factor models suggest that the DSM-5 PTSD factor structure may need further alterations.
authors.affiliation: School of Psychology, Ulster University, Coleraine, Northern Ireland, UK. Electronic address: armour.cherie@gmail.com.
authors.forename: Cherie
authors.initials: C
authors.lastname: Armour
authors.affiliation: School of Psychology, Ulster University, Coleraine, Northern Ireland, UK.
authors.forename: Jana
authors.initials: J
authors.lastname: Műllerová
authors.affiliation: Department of Psychology, University of Toledo, Toledo, OH, USA; Department of Psychiatry, University of Toledo, Toledo, OH, USA.
authors.forename: Jon D
authors.initials: JD
authors.lastname: Elhai
mesh_terms: D039721:Diagnostic and Statistical Manual of Mental Disorders; D005163:Factor Analysis, Statistical; D006801:Humans; D008960:Models, Psychological; D013313:Stress Disorders, Post-Traumatic / Q000145:classification* / Q000175:diagnosis*
keywords: Confirmatory factor analysis; DSM; Posttraumatic stress disorder; Systematic review