References

• Akaike, H. (1987). Factor analysis and AIC. Psychometrika, 52(3), 317–13. doi:10.1007/BF02294359
   Web of Science ®Google Scholar
• American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington, VA: Author. doi:10.1176/appi.books.9780890425596
   Google Scholar
• Armour, C., Fried, E. I., Deserno, M. K., Tsai, J., & Pietrzak, R. H. (2017). A network analysis of DSM-5 posttraumatic stress disorder symptoms and correlates in U.S. Military veterans. Journal of Anxiety Disorders, 45, 49–59. doi:10.1016/j.janxdis.2016.11.008
   PubMed Web of Science ®Google Scholar
• Armour, C., Müllerova, J., & Elhai, J. D. (2016). A systematic literature review of PTSD’s latent structure in the Diagnostic and Statistical Manual of Mental Disorders: DSM-IV to DSM-5. Clinical Psychology Review, 44, 60–74. doi:10.1016/j.cpr.2015.12.003
   PubMed Web of Science ®Google Scholar
• Armour, C., Tsai, J., Durham, T. A., Charak, R., Biehn, T. L., Elhai, J. D., & Pietrzak, R. H. (2015). Dimensional structure of DSM-5 posttraumatic stress symptoms: Support for a hybrid Anhedonia and Externalizing Behaviors model. Journal of Psychiatric Research, 61, 106–113. doi:10.1016/j.jpsychires.2014.10.012
   PubMed Web of Science ®Google Scholar
• Ben-Ezra, M., Karatzias, T., Hyland, P., Brewin, C. R., Cloitre, M., Bisson, J. I., … Shevlin, M. (2018). Posttr-aumatic stress disorder (PTSD) and complex PTSD (CPTSD) as per ICD-11 proposals: A population study in Israel. Depression and Anxiety, 35(3), 264–274. doi:10.1002/da.22723
   PubMed Web of Science ®Google Scholar
• Bentler, P. M. (2006). EQS 6 structural equations program manual. Encino, CA: Multivariate Software, Inc.
   Google Scholar
• Blevins, C. A., Weathers, F. W., Davis, M. T., Witte, T. K., & Domino, J. L. (2015). The posttraumatic stress disorder checklist for DSM-5 (PCL-5): Development and initial psychometric evaluation. Journal of Traumatic Stress, 28(6), 489–498. doi:10.1002/jts.22059
   PubMed Web of Science ®Google Scholar
• Boeschoten, M. A., van der Aa, N., Bakker, A., Ter Heide, F. J. J., Hoofwijk, M. C., Jongedijk, R. A., … Olff, M. (2018). Development and evaluation of the Dutch Clinician-Administered PTSD Scale for DSM-5 (CAPS-5). European Journal of Psychotraumatology, 9(1), 1546085. doi:10.1080/20008198.2018.1546085
   PubMed Web of Science ®Google Scholar
• Bondjers, K., Hyland, P., Roberts, N. P., Bisson, J. I., Willebrand, M., & Arnberg, F. K. (2019). Validation of a clinician-administered diagnostic measure of ICD-11 PTSD and Complex PTSD: The International Trauma Interview in a Swedish sample. European Journal of Psychotraumatology, 10(1), 1665617. doi:10.1080/20008198.2019.1665617
   PubMed Web of Science ®Google Scholar
• Bovin, M. J., Marx, B. P., Weathers, F. W., Gallagher, M. W., Rodriguez, P., Schnurr, P. P., & Keane, T. M. (2016). Psychometric properties of the PTSD checklist for diagnostic and statistical manual of mental disorders-fifth edition (PCL-5) in veterans. Psychological Assessment, 28(11), 1379–1391. doi:10.1037/pas0000254
   PubMed Web of Science ®Google Scholar
• Brewin, C. R., Cloitre, M., Hyland, P., Shevlin, M., Maercker, A., Bryant, R. A., … Geoffrey, M. (2017). A review of current evidence regarding the ICD-11 proposals for diagnosing PTSD and complex PTSD. Clinical Psychology Review, 58, 1–15. doi:10.1016/j.cpr.2017.09.001
   PubMed Web of Science ®Google Scholar
• Cao, X., Wang, L., Cao, C., Zhang, J., & Elhai, J. D. (2017). DSM-5 posttraumatic stress disorder symptom structure in disaster-exposed adolescents: Stability across gender and relation to behavioral problems. Journal of Abnormal Child Psychology, 45(4), 803–814. doi:10.1007/s10802-016-0193-1
   Web of Science ®Google Scholar
• Cavanaugh, J. E., & Neath, A. A. (2019). The Akaike information criterion: Background, derivation, properties, application, interpretation, and refinements. Wiley Interdisciplinary Reviews: Computational Statistics, 11(3), e1460. doi:10.1002/wics.1460
   Google Scholar
• Cero, I., & Kilpatrick, D. G. (2020). Network analysis of posttraumatic stress disorder symptoms in a national sample of U.S. Adults: Implications for the phenotype and the ICD-11 model of PTSD. Journal of Traumatic Stress, 33(1), 52–63. doi:10.1002/jts.22481
   Web of Science ®Google Scholar
• Clark, L. A., & Watson, D. (2019). Constructing validity: New developments in creating objective measuring instruments. Psychological Assessment, 31(12), 1412–1427. doi:10.1037/pas0000626
   PubMed Web of Science ®Google Scholar
• Cloitre, M., Shevlin, M., Brewin, C. R., Bisson, J. I., Roberts, N. P., Maercker, A., … Hyland, P. (2018). The International Trauma Questionnaire: Development of a self-report measure of ICD-11 PTSD and complex PTSD. Acta Psychiatrica Scandinavica, 138(6), 536–546. doi:10.1111/acps.12956
   PubMed Web of Science ®Google Scholar
• Comrey, A. L., & Lee, H. B. (2013). A first course in factor analysis. Psychology Press. doi:10.4324/9781315827506
   Google Scholar
• Contractor, A. A., Caldas, S. V., Dolan, M., Lagdon, S., & Armour, C. (2018). PTSD’s factor structure and measurement invariance across subgroups with differing count of trauma types. Psychiatry Research, 264, 76–84. doi:10.1016/j.psychres.2018.03.065
   Web of Science ®Google Scholar
• Cramer, A. O. J., Leertouwer, I., Lanius, R., & Frewen, P. (2020). A network approach to studying the associations between posttraumatic stress disorder symptoms and dissociative experiences. Journal of Traumatic Stress, 33(1), 19–28. doi:10.1002/jts.22488
   PubMed Web of Science ®Google Scholar
• Derogatis, L. R., & Melisaratos, N. (1983). The brief symptom inventory: An introductory report. Psychological Medicine, 13(3), 595–605. doi:10.1017/S0033291700048017
   PubMed Web of Science ®Google Scholar
• Elhai, J. D., Biehn, T. L., Armour, C., Klopper, J. J., Frueh, B. C., & Palmieri, P. A. (2011). Evidence for a unique PTSD construct represented by PTSD’s D1-D3 symptoms. Journal of Anxiety Disorders, 25(3), 340–345. doi:10.1016/j.janxdis.2010.10.007
   PubMed Web of Science ®Google Scholar
• Evans, J. D. (1996). Straightforward statistics for the behavioral sciences. Pacific Grove: Brooks/Cole Publishing.
   Google Scholar
• Forbes, D., Lockwood, E., Elhai, J. D., Creamer, M., Bryant, R. A., McFarlane, A., … O’Donnell, M. (2015). An evaluation of the DSM-5 factor structure for posttraumatic stress disorder in survivors of traumatic injury. Journal of Anxiety Disorders, 29, 43–51. doi:10.1016/j.janxdis.2014.11.004
   PubMed Web of Science ®Google Scholar
• Gilmour, J., & Romaniuk, M. (2020). Factor structure of posttraumatic stress disorder (PTSD) in Australian Vietnam Veterans: Confirmatory factor analysis of the Clinician-Administered PTSD Scale for DSM–5. Journal of Military, Veteran and Family Health, e20180042. doi:10.3138/jmvfh.2018-0042
   Google Scholar
• Hansen, M., Hyland, P., Armour, C., Shevlin, M., & Elklit, A. (2015). Less is more? Assessing the validity of the ICD-11 model of PTSD across multiple trauma samples. European Journal of Psychotraumatology, 6(1), 28766. doi:10.3402/ejpt.v6.28766
   PubMed Web of Science ®Google Scholar
• Hansen, M., Hyland, P., Karstoft, K. I., Vaegter, H. B., Bramsen, R. H., Nielsen, A. B. S., … Andersen, T. E. (2017). Does size really matter? A multisite study assessing the latent structure of the proposed ICD-11 and DSM-5 diagnostic criteria for PTSD. European Journal of Psychotraumatology, 8(sup7), 1398002. doi:10.1080/20008198.2017.1398002
   PubMed Web of Science ®Google Scholar
• Ho, G. W. K., Hyland, P., Shevlin, M., Chien, W. T., Inoue, S., Yang, P. J., … Karatzias, T. (2020). The validity of ICD-11 PTSD and Complex PTSD in East Asian cultures: Findings with young adults from China, Hong Kong, Japan, and Taiwan. European Journal of Psychotraumatology, 11(1), 1717826. doi:10.1080/20008198.2020.1717826
   PubMed Web of Science ®Google Scholar
• Hu, L., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling: A Multidisciplinary Journal, 6(1), 1–55. doi:10.1080/10705519909540118
   Web of Science ®Google Scholar
• Hunt, J. C., Chesney, S. A., Jorgensen, T. D., Schumann, N. R., & deRoon-Cassini, T. A. (2018). Exploring the gold-standard: Evidence for a two-factor model of the Clinician Administered PTSD Scale for the DSM-5. Psychological Trauma: Theory, Research, Practice and Policy, 10(5), 551–558. doi:10.1037/tra0000310
   Web of Science ®Google Scholar
• Hyland, P., Brewin, C. R., & Maercker, A. (2017). Predictive validity of ICD-11 PTSD as measured by the impact of event scale-revised: A 15-year prospective study of political prisoners. Journal of Traumatic Stress, 30(2), 125–132. doi:10.1002/jts.22171
   PubMed Web of Science ®Google Scholar
• Karatzias, T., Shevlin, M., Fyvie, C., Hyland, P., Efthy-miadou, E., Wilson, D., … Cloitre, M. (2016). An initial psychometric assessment of an ICD-11 based measure of PTSD and complex PTSD (ICD-TQ): Evidence of construct validity. Journal of Anxiety Disorders, 44, 73–79. doi:10.1016/j.janxdis.2016.10.009
   PubMed Web of Science ®Google Scholar
• Kass, R. E., & Raftery, A. E. (1995). Bayes Factors. Journal of the American Statistical Association, 90(430), 773–795. doi:10.1080/01621459.1995.10476572
   Web of Science ®Google Scholar
• Keeley, J. W., Reed, G. M., Roberts, M. C., Evans, S. C., Medina-Mora, M. E., Robles, R., … Saxena, S. (2016). Developing a science of clinical utility in diagnostic classification systems field study strategies for ICD-11 mental and behavioral disorders. The American Psychologist, 71(1), 3–16. doi:10.1037/a0039972
   PubMed Web of Science ®Google Scholar
• Kline, R. B. (2016). Principles and practice of structural equation modeling (4th ed). Methodology in the social sciences. New York, London: The Guilford Press.
   Google Scholar
• Konecky, B., Meyer, E. C., Kimbrel, N. A., & Morissette, S. B. (2016). The structure of DSM-5 posttraumatic stress disorder symptoms in war veterans. Anxiety, Stress, and Coping, 29(5), 497–506. doi:10.1080/10615806.2015.1081178
   PubMed Web of Science ®Google Scholar
• Korkmaz, S., Goksuluk, D., & Zararsiz, G. (2014). MVN: An R package for assessing multivariate normality. The R Journal, 6(2), 151. doi:10.32614/RJ-2014-031
   Google Scholar
• Krüger-Gottschalk, A., Knaevelsrud, C., Rau, H., Dyer, A., Schäfer, I., Schellong, J., & Ehring, T. (2017). The German version of the Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5): Psychometric properties and diagnostic utility. BMC Psychiatry, 17(1), 379. doi:10.1186/s12888-017-1541-6
   PubMed Web of Science ®Google Scholar
• Kühner, C., Bürger, C., Keller, F., & Hautzinger, M. (2007). Reliabilität und Validität des revidierten Beck-Depres-sionsinventars (BDI-II). Befunde aus deutschsprachigen Stichproben [Reliability and validity of the Revised Beck Depression Inventory (BDI-II). Results from German samples]. Nervenarzt, 78(6), 651–656. doi:10.1007/s00115-006-2098-7
   PubMed Web of Science ®Google Scholar
• Lee, D. J., Bovin, M. J., Weathers, F. W., Palmieri, P. A., Schnurr, P. P., Sloan, D. M., … Marx, B. P. (2019). Latent factor structure of DSM-5 posttraumatic stress disorder: Evaluation of method variance and construct validity of novel symptom clusters. Psychological Assessment, 31(1), 46–58. doi:10.1037/pas0000642
   PubMed Web of Science ®Google Scholar
• Liu, L., Wang, L., Cao, C., Qing, Y., & Armour, C. (2016). Testing the dimensional structure of DSM-5 posttraumatic stress disorder symptoms in a nonclinical trauma-exposed adolescent sample. Journal of Child Psychology and Psychiatry, 57(2), 204–212. doi:10.1111/jcpp.12462
   PubMed Web of Science ®Google Scholar
• Maercker, A., Brewin, C. R., Bryant, R. A., Cloitre, M., van Ommeren, M., Jones, L. M., … Reed, G. M. (2013). Diagnosis and classification of disorders specifically associated with stress: Proposals for ICD-11. World Psychiatry: Official Journal of the World Psychiatric Association (WPA), 12(3), 198–206. doi:10.1002/wps.20057
   PubMed Web of Science ®Google Scholar
• Muller-Engelmann, M., Schnyder, U., Dittmann, C., Priebe, K., Bohus, M., Thome, J., … Steil, R. (2018). Psychometric properties and factor structure of the German version of the Clinician-Administered PTSD Scale for DSM-5. Assessment, 1073191118774840. doi:10.1177/1073191118774840
   Web of Science ®Google Scholar
• Murphy, S., Hansen, M., Elklit, A., Yong Chen, Y., Raudzah Ghazali, S., & Shevlin, M. (2018). Alternative models of DSM-5 PTSD: Examining diagnostic implications. Psych-iatry Research, 262, 378–383. doi:10.1016/j.psychres.2017.09.011
   Web of Science ®Google Scholar
• Muthen, L., & Muthen, B. (2012). Mplus version 7 user’s guide: Version 7. Los Angeles, CA: Muthén: Muthen & Muthen.
   Google Scholar
• R Core Team. (2013). R: A language and environment for statistical computing (Version 3.3.2) [Windows] [Computer software]. Vienna, Austria: R Foundation for Statistical Computing. Retrieved from http://www.R-project.org/
   Google Scholar
• Rasmussen, A., Verkuilen, J., Jayawickreme, N., Wu, Z., & McCluskey, S. T. (2018). When did posttraumatic stress disorder get so many factors? Confirmatory factor models since DSM–5. Clinical Psychological Science, 216770261880937. https://doi.org/10.1177/2167702618809370
   Google Scholar
• Redican, E., Nolan, E., Hyland, P., Cloitre, M., McBride, O., Karatzias, T., … Shevlin, M. (2021). A systematic literature review of factor analytic and mixture models of ICD-11 PTSD and CPTSD using the International Trauma Questionnaire. Journal of Anxiety Disorders, 79, 102381. doi:10.1016/j.janxdis.2021.102381
   PubMed Web of Science ®Google Scholar
• Rosseel, Y. (2012). lavaan: An R package for structural equation modeling. Journal of Statistical Software, 48(2), 1–36. Retrieved from https://www.jstatsoft.org/article/view/v048i02
   Google Scholar
• Satorra, A., & Bentler, P. M. (2010). Ensuring positiveness of the Scaled Difference Chi-square Test Statistic. Psychometrika, 75(2), 243–248. doi:10.1007/s11336-009-9135-y
   PubMed Web of Science ®Google Scholar
• Schnyder, U. (2013). German version of the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5). Unpu-blished manuscript, University Hospital Zurich, Switzerland.
   Google Scholar
• Schwarz, G. (1978). Estimating the dimension of a model. Annals of Statistics, 6(2), 461–464. doi:10.1214/aos/1176344136
   Web of Science ®Google Scholar
• Silverstein, M. W., Petri, J. M., Kramer, L. B., & Weathers, F. W. (2020). An item response theory analysis of the PTSD checklist for DSM-5: Implications for DSM-5 and ICD-11. Journal of Anxiety Disorders, 70, 102190. doi:10.1016/j.janxdis.2020.102190
   Web of Science ®Google Scholar
• Simms, L. J., Watson, D., & Doebbelling, B. N. (2002). Confirmatory factor analyses of posttraumatic stress symptoms in deployed and nondeployed veterans of the Gulf War. Journal of Abnormal Psychology, 111(4), 637–647. doi:10.1037/0021-843X.111.4.637
   PubMed Web of Science ®Google Scholar
• Spiller, T. R., Schick, M., Schnyder, U., Bryant, R. A., Nickerson, A., & Morina, N. (2017). Symptoms of posttraumatic stress disorder in a clinical sample of refugees: Anetwork analysis. European Journal of Psychotraumatology, 8(sup3), 1318032. doi:10.1080/20008198.2017.1318032
   PubMed Web of Science ®Google Scholar
• Tsai, J., Harpaz-Rotem, I., Armour, C., Southwick, S. M., Krystal, J. H., & Pietrzak, R. H. (2015). Dimensional structure of DSM-5 posttraumatic stress disorder symptoms: Results from the National Health and Resilience in Veterans Study. The Journal of Clinical Psychiatry, 76(5), 546–553. doi:10.4088/JCP.14m09091
   PubMed Web of Science ®Google Scholar
• Vallières, F., Ceannt, R., Daccache, F., Abou Daher, R., Sleiman, J., Gilmore, B., … Hyland, P. (2018). Icd-11 PTSD and complex PTSD amongst Syrian refugees in Lebanon: The factor structure and the clinical utility of the International Trauma Questionnaire. Acta Psychiatrica Scandinavica, 138(6), 547–557. doi:10.1111/acps.12973
   PubMed Web of Science ®Google Scholar
• Van de Schoot, R., Lugtig, P., & Hox, J. (2012). A checklist for testing measurement invariance. European Journal of Developmental Psychology, 9(4), 486–492. doi:10.1080/17405629.2012.686740
   Web of Science ®Google Scholar
• Weathers, F. W., Blake, D. D., Schnurr, P. P., Kaloupek, D. G., Marx, B. P., & Keane, T. T. I. (2013). The life event events checklist for DSM-5 (LEC-5). Boston, MA: National Center for PTSD.
   Google Scholar
• Weathers, F. W., Bovin, M. J., Lee, D. J., Sloan, D. M., Schnurr, P. P., Kaloupek, D. G., & Marx, B. P. (2018). The Clinician-Administered PTSD Scale for DSM-5 (CAPS-5): Development and initial psychometric evaluation in military veterans. Psychological Assessment, 30(3), 383–395. doi:10.1037/pas0000486
   PubMed Web of Science ®Google Scholar
• Wortmann, J. H., Jordan, A. H., Weathers, F. W., Resick, P. A., Dondanville, K. A., Hall-Clark, B., … Litz, B. T. (2016). Psychometric analysis of the PTSD checklist-5 (PCL-5) among treatment-seeking military service members (Vol. 28). doi:10.1037/pas0000260
   Google Scholar
• Zelazny, K., & Simms, L. J. (2015). Confirmatory factor analyses of DSM-5 posttraumatic stress disorder symptoms in psychiatric samples differing in Criterion A status. Journal of Anxiety Disorders, 34, 15–23. doi:10.1016/j.janxdis.2015.05.009
   PubMed Web of Science ®Google Scholar