Psychometric Evaluation of the Swedish Version of the Prolonged Grief Disorder-13 (PG-13) in a Bereaved Mixed Trauma Sample

Background: This study aimed to examine the psychometric properties of the Swedish PG-13 in a bereaved trauma exposed sample. A second aim was to examine the latent structure of prolonged grief using the PG-13. Methods: The participants were adults ( n = 123) taking part in an ongoing longitudinal study regarding the effects of potentially traumatic events. Participants had experienced a potentially traumatic event in the past 5 years and had reported a death of a significant other either as their primary traumatic event or in addition to another traumatic event. Assessment included self-report of prolonged grief, posttraumatic stress, and general psychological distress. Clinical interviews were used to assess depression, posttraumatic stress disorder, and disability level. The psychometric properties of the Swedish PG-13 were examined through reliability tests and assessment of associations with symptoms of posttraumatic stress, depression, general psychological distress, and disability level. Principal component analysis (PCA) and confirmatory factor analyses (CFA) were used to assess the latent structure. Results: The internal consistency (Cronbach's α = 0.86) and test-retest ( r = 0.86) reliability were good. PCA suggested a three-factor model as descriptive of the latent structure of the instrument. Therefore, the CFA used this model, as well as two models suggested in the literature. The three-factor model had the best fit to data. Support of concurrent validity of PG-13 was shown by moderate positive associations with measures of posttraumatic stress, depression, and general psychological distress. Conclusions: The Swedish PG-13 demonstrated good psychometric properties, and its use in research and practice to assess prolonged grief was supported. The factor analyses provided stronger support for models with two or three factors, as compared with a unidimensional model of prolonged grief, with the three-factor model having the best fit

Complicated grief · Confirmatory factor analysis · Cronbach's alpha · Depression (economics · Distress · Grief · Posttraumatic stress · Psychiatry · Psychometrics · Structural equation modeling · Clinical Psychology · Grief, Bereavement, and Mental Health · Migration, Health and Trauma · Palliative Care and End-of-Life Issues · Psychology

• Item Response Theory to Evaluate Prolonged Grief Disorder in the DSM-5-TR Among Young Adults

  Open Access•Carol Fadalla, Elisabeth McLean et al.•OMEGA - Journal of Death and Dying•2026

  Incluir item

• A Systematic Review of Dimensional and Categorical Models of Grief Related Disorders

  Open Access•J M Cunningham, Mark Shevlin et al.•Journal of Loss and Trauma•2026

  Incluir item

• Psychometric evaluation of the prolonged grief disorder-13-revised (PG-13-R) for Indonesian bereaved adults

  Christina Yeni Kustanti, Holly G Prigerson et al.•Death Studies•2025

  Incluir item

• Coping and grief symptoms after parental loss in adolescence - a nationwide follow-up study

  Anne Sophie Schaadt, Pernille E Bidstrup et al.•Death Studies•2024

  Incluir item

• Psychometric properties, stability, and predictive validity of the Korean version of the Prolonged Grief Disorder Scale (PG-13-K)

  Yujin Hwang, Dong Hun Lee et al.•Death Studies•2022

  Incluir item

• Examination of the Weighted Root Mean Square Residual

  Christine Distefano, Jin Liu et al.•Structural Equation Modeling: A…•2018

  Incluir item

• Prolonged Grief Disorder

  Open Access•Holly G Prigerson, Mardi J Horowitz et al.•PLoS Medicine•2009

  Incluir item

• The varieties of grief experience

  Open Access•George A Bonanno, Stacey Kaltman•Clinical Psychology Review•2001

  Incluir item

• On the Performance of Maximum Likelihood Versus Means and Variance Adjusted Weighted Least Squares Estimation in CFA

  André Beauducel, Philipp Y Herzberg et al.•Structural Equation Modeling: A…•2006

  Incluir item

• The Mini International Neuropsychiatric Interview (Mini). A short diagnostic structured interview

  Open Access•Y Lecrubier, David V Sheehan et al.•European Psychiatry•1997

  Incluir item

• The influence of symptoms of prolonged grief disorder, depression, and anxiety on quality of life among bereaved adults

  Open Access•Paul A Boelen, Holly G Prigerson•European Archives of Psychiatry…•2007

  Incluir item

• Prevalence of complicated grief in a representative population-based sample

  Open Access•Anette Kersting, E Brähler et al.•Journal of Affective Disorders•2011

  Incluir item

• Prevalence of prolonged grief disorder in adult bereavement

  Open Access•Marie Lundorff, Helle Holmgren et al.•Journal of Affective Disorders•2017

  Incluir item

• Inventory of complicated grief

  Open Access•Holly G Prigerson, Paul K Maciejewski et al.•Psychiatry Research•1995

  Incluir item

• The validity of the Mini International Neuropsychiatric Interview (Mini) according to the SCID-P and its reliability

  Open Access•David V Sheehan, DV Sheehan et al.•European Psychiatry•1997

  Incluir item

• The prevalence of prolonged grief disorder in bereaved individuals following unnatural losses

  Open Access•A A A Manik J Djelantik, Geert E Smid et al.•Journal of Affective Disorders•2020

  Incluir item

• Confirmatory factor analysis with ordinal data

  Open Access•Cheng-Hsien Li•Behavior Research Methods•2016

  Incluir item

• A Call for Sound Empirical Testing and Evaluation of Criteria for Complicated Grief Proposed for DSM-V

  Open Access•Holly G Prigerson, Paul K Maciejewski•OMEGA - Journal of Death and Dying•2006

  Incluir item

• Inventory of complicated grief

  Rinat Lifshitz, Kfir Ifrah et al.•Death Studies•2020

  Incluir item