World Health Organization. ICD-11. Int Classif Dis 11th Revis. 2018.

APA. Diagnostic and statistical manual of mental disorders: DSM-5-TR. Fifth edition, text revision. Washington, DC: American Psychiatric Association Publishing; 2022. (DSM-5-TR).

Google Scholar 

Prigerson HG, Kakarala S, Gang J, Maciejewski PK. History and status of prolonged grief disorder as a Psychiatric diagnosis. Annu Rev Clin Psychol 7 Mai. 2021;17(1):109–26.

Article  Google Scholar 

Boelen PA, Lenferink LIM. Comparison of six proposed diagnostic criteria sets for disturbed grief. Psychiatry Res. 2020;285:112786.

Article  PubMed  Google Scholar 

Maciejewski PK, Maercker A, Boelen PA, Prigerson HG. Prolonged grief disorder’ and ’persistent complex bereavement disorder’, but not ’complicated grief’, are one and the same diagnostic entity: an analysis of data from the Yale Bereavement Study. World Psychiatry Januar. 2016;15(3):266–532.

Article  Google Scholar 

Killikelly C, Zhou N, Merzhvynska M, Stelzer EM, Dotschung T, Rohner S. u. a. development of the international prolonged grief disorder scale for the ICD-11: measurement of core symptoms and culture items adapted for Chinese and german-speaking samples. J Affect Disord. 2020;277:568–76.

Article  PubMed  Google Scholar 

Eisma MC, Rosner R, Comtesse H. ICD-11 prolonged grief disorder criteria: turning challenges into opportunities with multiverse analyses. Front Psychiatry Januar. 2020;11:752–1504.

Article  Google Scholar 

Andrews B, Hejdenberg J, Wilding J. Student anxiety and depression: comparison of questionnaire and interview assessments. J Affect Disord. 2006;95(1):29–34.

Article  PubMed  Google Scholar 

Fairburn CG, Beglin SJ. Assessment of eating disorders: interview or self-report questionnaire? Int J Eat Disord 1 Dezember. 1994;16(4):363–70.

Article  CAS  Google Scholar 

Goodman A, Heiervang E, Fleitlich-Bilyk B, Alyahri A, Patel V, Mullick MSI. u. a. cross-national differences in questionnaires do not necessarily reflect comparable differences in disorder prevalence. Soc Psychiatry Psychiatr Epidemiol 1 August. 2012;47(8):1321–31.

Article  Google Scholar 

Hopwood CJ, Morey LC, Edelen MO, Shea MT, Grilo CM, Sanislow CA. u. a. A comparison of interview and self-report methods for the assessment of borderline personality disorder criteria. Psychol Assess März. 2008;20(1):81–162.

Article  Google Scholar 

Lim GY, Tam WW, Lu Y, Ho CS, Zhang MW, Ho RC. Prevalence of Depression in the community from 30 countries between 1994 and 2014. Sci Rep 12 Februar. 2018;8(1):2861.

Article  Google Scholar 

Marta-Pedroso C, Freitas H, Domingos T. Testing for the survey mode effect on contingent valuation data quality: a case study of web based versus in-person interviews. Ecol Econ 15 Mai. 2007;62(3):388–98.

Article  Google Scholar 

Kramer LB, Whiteman SE, Petri JM, Spitzer EG, Weathers FW. Self-rated versus clinician-rated assessment of posttraumatic stress disorder: an evaluation of discrepancies between the PTSD checklist for DSM-5 and the clinician-administered PTSD scale for DSM-5. Assessment. 2023;30(5):1590–605.

Article  PubMed  Google Scholar 

Lenferink LIM, Franzen M, ten Klooster PM, Knaevelsrud C, Boelen PA, Heeke C. The traumatic grief inventory-clinician administered: a psychometric evaluation of a new interview for ICD-11 and DSM-5-TR prolonged grief disorder severity and probable caseness. J Affect Disord Juni. 2023;330:188–376.

Article  Google Scholar 

Boelen PA, Smid GE. The traumatic grief Inventory Self-Report Version (TGI-SR): introduction and preliminary psychometric evaluation. J Loss Trauma 3 April. 2017;22(3):196–212.

Article  Google Scholar 

Lenferink LIM, Eisma MC, Smid GE, de Keijser J, Boelen PA. Valid measurement of DSM-5 persistent complex bereavement disorder and DSM-5-TR and ICD-11 prolonged grief disorder: the traumatic grief inventory-self Report Plus (TGI-SR+). Compr Psychiatry 1 Januar. 2022;112:152281.

Article  CAS  Google Scholar 

Prigerson HG, Boelen PA, Xu J, Smith KV, Maciejewski PK. Validation of the new DSM-5‐TR criteria for prolonged grief disorder and the PG‐13‐Revised (PG‐13‐R) scale. World Psychiatry Januar. 2021;20(1):96–192.

Article  Google Scholar 

Rosner R, Comtesse H, Vogel A, Doering BK. Prevalence of prolonged grief disorder. J Affect Disord Mai. 2021;287:301–602.

Article  Google Scholar 

Killikelly C, Lorenz L, Bauer S, Mahat-Shamir M, Ben-Ezra M, Maercker A. Prolonged grief disorder: its co-occurrence with adjustment disorder and post-traumatic stress disorder in a bereaved Israeli general-population sample. J Affect Disord April. 2019;249:307–614.

Article  Google Scholar 

Shevlin M, Redican E, Hyland P, Murphy J, Karatzias T, Mc Bride. O, u. a. symptoms and levels of ICD-11 prolonged grief disorder in a representative community sample of UK adults. Soc PSYCHIATRY Psychiatr Epidemiol; April 2023.

Treml J, Brähler E, Kersting A, Prevalence. Factor structure and correlates of DSM-5-TR criteria for prolonged grief disorder. Front Psychiatry Mai 2022;13.

Boelen PA, Lenferink LIM, Nickerson A, Smid GE. Evaluation of the factor structure, prevalence, and validity of disturbed grief in DSM-5 and ICD-11. J Affect Disord November. 2018;240:79–158.

Article  Google Scholar 

Killikelly C, Merzhvynska M, Zhou N, Stelzer EM, Hyland P, Rocha J. u. a. examination of the new ICD-11 prolonged grief disorder guidelines across five international samples. Clin Psychol Eur Januar. 2021;3(1):e4159–0.

Article  Google Scholar 

Killikelly C, Kagialis A, Henneman S, Coronado H, Demanarig D, Farahani H. u. a. measurement and assessment of grief in a large international sample. J Affect Disord April. 2023;327:306–612.

Article  CAS  Google Scholar 

Boelen PA, Lenferink LIM. Prolonged grief disorder in DSM-5-TR: early predictors and longitudinal measurement invariance. Aust N Z J Psychiatry Juni. 2022;56(6):667–1334.

Article  Google Scholar 

Haneveld J, Rosner R, Vogel A, Kersting A, Rief W, Steil R. u. a. same name, same content? Evaluation of DSM-5-TR and ICD-11 prolonged grief criteria. J Consult Clin Psychol April. 2022;90(4):303–606.

Article  Google Scholar 

Bryant RA, Bawaneh A, Giardinelli L, Awwad M, Al-Hayek H, Akhtar A. A prevalence assessment of prolonged grief disorder in Syrian refugees. World Psychiatry Juni. 2021;20(2):302–604.

Article  Google Scholar 

Zhou N, Wen J, Stelzer EM, Killikelly C, Yu W, Xu X. Prevalence and associated factors of prolonged grief disorder in Chinese parents bereaved by losing their only child. Psychiatry Res Februar 2020;284.

Baumann I, Künzel J, Goldbeck L, Tutus D, Niemitz M. Prolonged grief, posttraumatic stress, and depression among bereaved parents: prevalence and response to an intervention program. Omega - J Death Dying Januar. 2022;84(3):837–1674.

Article  Google Scholar 

Tang S, Xiang Z. Who suffered most after deaths due to COVID-19? Prevalence and correlates of prolonged grief disorder in COVID-19 related bereaved adults. Glob Health Februar. 2021;17(1):1–2.

Google Scholar 

Gang J, Falzarano F, She WJ, Winoker H, Prigerson HG. Are deaths from COVID-19 associated with higher rates of prolonged grief disorder (PGD) than deaths from other causes? Death Stud Januar. 2022;46(6):1287–2574.

Article  Google Scholar 

Buur C, Zachariae R, Komischke-Konnerup K, Marello M, Schierff L, O’Connor M. Risk factors for prolonged grief symptoms a systematic review and meta-analysis. Clin Psychol Rev. 2023;102375.

Jordan AH, Litz BT. Prolonged grief disorder: diagnostic, assessment, and treatment considerations. Prof Psychol Res Pract. 2014;45(3):180.

Article  Google Scholar 

Wittouck C, Van Autreve S, De Jaegere E, Portzky G, van Heeringen K. The prevention and treatment of complicated grief: a meta-analysis. Clin Psychol Rev Januar. 2011;31(1):69–138.

Article  Google Scholar 

Caarls PJ, van Schijndel MA, Kromkamp M, Wierdsma AI, Osse RJ, van Hoeven G. Der, u. a. need analysis for a new high acuity medical psychiatry unit: which patients are considered for admission? BMC Health Serv Res Februar. 2019;19(1):1–2.

Google Scholar 

Ziegenbein M, Anreis C, Brüggen B, Ohlmeier M, Kropp S. Januar. Possible criteria for inpatient psychiatric admissions: which patients are transferred from emergency services to inpatient psychiatric treatment? 2021.

Carlson EB, Dalenberg C, Armstrong J, Daniels JW, Loewenstein R, Roth D. Multivariate prediction of posttraumatic symptoms in Psychiatric inpatients. J Trauma Stress 1 Juli. 2001;14(3):549–67.

Article  CAS  Google Scholar 

Saba DK, Levit KR, Elixhauser A. Hospital stays related to mental health, 2006. Healthc Cost Util Proj HCUP Stat Briefs Internet; 2008.

McFarlane AC, Bookless C, Air T. Posttraumatic Stress Disorder in a General Psychiatric Inpatient Population. J Trauma Stress 1 Oktober. 2001;14(4):633–45.

Article  CAS  Google Scholar 

Pratt SI, Rosenberg S, Mueser KT, Brancato J, Salyers M, Jankowski MK. u. a. evaluation of a PTSD psychoeducational program for psychiatric inpatients. J Ment Health 1 April. 2005;14(2):121–7.

Article  Google Scholar 

Szuhany KL, Malgaroli M, Miron CD, Simon NM. Prolonged grief disorder: Course, diagnosis, Assessment, and treatment. FOCUS 1 Juni. 2021;19(2):161–72.

Article  Google Scholar 

Margraf J, Cwik JC, Mini. -DIPS Open Access: Diagnostic Short-Interview for Mental Disorders [Internet]. Bochum: Forschungs- und Behandlungszentrum für psychische Gesundheit, Ruhr-Universität; 2017. Available at: https://doi.org/10.13154/rub.102.91.

Margraf J, Cwik JC, Suppiger A, Schneider S. DIPS Open Access: diagnostic interview for Mental disorders. Bochum: Mental Health Research and Treatment Center, Ruhr-Universität Bochum; 2017.

Google Scholar 

Margraf J, Cwik JC, Pflug V, Schneider S. Structured clinical interviews for mental disorders across the lifespan: psychometric quality and further developments of the DIPS Open Access interviews. Z Für Klin Psychol Psychother. 2017;(46):176–86.

Derogatis LR. Brief Symptom Inventory (BSI), administration, scoring, and procedures manual. 3rd ed. National Computer Services; 1993.

R Core Team. R: A language and environment for statistical computing. [Internet]. Vienna, Austria: R Foundation for Statistical Computing. 2022. https://www.R-project.org/.

Wei T, Simko V. R package „corrplot: Visualization of a Correlation Matrix [Internet]. 2021. https://github.com/taiyun/corrplot.

Revelle W. psych: Procedures for Psychological, Psychometric, and Personality Research [Internet]. 2023. https://CRAN.R-project.org/package=psych.

Bernaards CA, Jennrich RI. Gradient Projection algorithms and Software for arbitrary rotation criteria in factor analysis. Educ Psychol Meas. 2005;65(5):676–96.

Article  Google Scholar 

Kaiser HF. The application of electronic computers to factor analysis. Educ Psychol Meas. 1960;20(1):141–51.

Article  Google Scholar 

Lê S, Josse J, Husson F, FactoMineR. A Package for Multivariate Analysis. J Stat Softw. 2008;25(1):1–18.

Article  Google Scholar 

Lüdecke D, sjPlot. Data Visualization for Statistics in Social Science [Internet]. 2023. https://CRAN.R-project.org/package=sjPlot.

Wickham H. ggplot2: Elegant Graphics for Data Analysis [Internet]. New York: Springer Verlag; 2016. https://ggplot2.tidyverse.org.

Hayes AF, Coutts JJ. Use Omega rather than Cronbach’s alpha for estimating reliability. Commun Methods Meas 2 Januar. 2020;14(1):1–24.

Article  Google Scholar 

Gamer M, Lemon J, Puspendra Singh IF. irr: Various Coefficients of Interrater Reliability and Agreement [Internet]. 2019. https://CRAN.R-project.org/package=irr.

Robin X, Turck N, Hainard A, Tiberti N, Lisacek F, Sanchez JC. u. a. pROC: an open-source package for R and S + to analyze and compare ROC curves. BMC Bioinformatics. 2011;12:77.

Article  PubMed  PubMed Central  Google Scholar 

Liaw A, Wiener M. Classification and regression by randomForest. R News. 2002;2(3):18–22.

Google Scholar 

Zwick WR, Velicer WF. Comparison of five rules for determining the number of components to retain. Psychol Bull. 1986;99(3):432.

Article