Valid ICD-11 PGD Scales and Structured Clinical Interviews Needed

Psychometric Evaluation of the Traumatic Grief Inventory-Self Report Plus (TGI-SR+) in Chinese Bereaved People

OBJECTIVE

The Traumatic Grief Inventory-Self Report Plus (TGI-SR+) measures the most recent prolonged grief disorder (PGD) symptom sets defined in the 11th edition of the International Statistical of Diseases and Related Health Problems (ICD-11) and the text revision of the fifth edition of the Diagnostical and Statistical Manual of Mental Disorders (DSM-5-TR). However, the TGI-SR+ has not yet been translated and validated in Chinese. This study aims to evaluate the psychometric properties of the Chinese translation of the TGI-SR+.

METHODS

We examined the Chinese TGI-SR+'s factor structure, internal consistency, convergent validity, discriminant validity, known-groups validity, and optimal clinical cut-off scores in 443 Chinese bereaved adults.

RESULTS

Confirmatory factor analyses showed that the two-factor models showed the best fit for the Chinese TGI-SR+ items assessing ICD-11 and DSM-5-TR prolonged grief symptoms. Items assessing ICD-11 and DSM-5-TR prolonged grief symptoms demonstrated good internal consistency. Associations of TGI-SR+ scores with symptom levels of prolonged grief (assessed by the International Prolonged Grief Disorder Scale), posttraumatic stress, anxiety, and depression supported convergent and discriminant validity. Associations with background/loss-related variables provided evidence for known-groups validity. Cut-off points for probable ICD-11 PGD (liberal scoring rule), probable ICD-11 PGD (conservative scoring rule), and probable DSM-5-TR PGD were ≥67, ≥75, and ≥68, respectively.

DISCUSSION

The Chinese TGI-SR+ appears to be a reliable and valid measure to assess prolonged grief symptoms per ICD-11 and DSM-5-TR among Chinese bereaved adults.

The smoldering pandemic: Prevalence of prolonged grief disorder. A cross-sectional study of bereaving adults during the COVID pandemic in Pakistan

The world continues to face unprecedented psycho-social challenges after the COVID-19 pandemic. Prolonged Grief Disorder (PGD) is a young psychiatric condition describing grief exceeding standard cultural, social, and religious norms. We assessed the prevalence of PGD in Pakistan along with its correlation to anxiety, depression, and psychological distress. The prevalence of PGD was estimated to be 15 % with grief intensity correlating with depression, anxiety, and serious mental illness. People who were closely related to the deceased were more likely to experience severe PGD symptoms. Discussions about grief and measures to curb its psychological effects are crucial in the post-pandemic world.

On the Classification and Reporting of Prolonged Grief: Assessment and Research Guidelines

LEARNING OBJECTIVES AFTER PARTICIPATING IN THIS CME ACTIVITY, THE PSYCHIATRIST SHOULD BE BETTER ABLE TO

• Explain the steps required for diagnosis of mental disorders in diagnostic handbooks.• Identify current procedures for classifying and reporting prolonged grief disorder.

ABSTRACT

Prolonged grief disorder (PGD) was added to the 11th edition of the International Classification of Diseases in 2018 and to the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders in its 2022 text revision. Thus, reporting and classifying PGD according to established guidelines has become fundamental for scientific research and clinical practice. Yet, PGD assessment instruments and criteria are still being developed and debated. The purpose of this article is to examine the adequacy of current procedures for classifying and reporting PGD in research and to suggest guidelines for future investigation and dissemination of knowledge. We outline the standard steps required for diagnosis and assessment of a mental disorder (notably, the administration of clinical interviews). In order to illustrate reporting about the presence/prevalence of PGD in recent scientific articles, we conducted a search of Scopus that identified 22 relevant articles published between 2019 and 2023. Our review of the literature shows that standard classification procedures are not (yet) followed. Prevalences of PGD are based on self-reported symptomatology, with rates derived from percentages of bereaved persons reaching a certain cutoff score on a questionnaire, without clinical interviewing. This likely results in systematic overestimation of prevalences. Nevertheless, the actual establishment of PGD prevalence was often stated in titles, abstracts, and results sections of articles. Further, the need for structured clinical interviews for diagnostic classification was frequently mentioned only among limitations in discussion sections-but was not highlighted. We conclude by providing guidelines for researching and reporting self-reported prolonged grief symptoms and the presence/prevalence of PGD.

Operationalization, implications and correlates of the cultural deviance criterion for ICD-11 and DSM-5 prolonged grief disorder

Prolonged Grief Disorder (PGD) is included in ICD-11 and DSM-5-TR and includes a requirement of cultural deviance. This study examined endorsement rates and factors associated with endorsement of this criterion among Danish bereaved spouses (n = 425) and their adult children (n = 159) four years post-loss. In total, 7.5% (n = 44) participants endorsed this criterion. Both including and excluding the criterion, the prevalence rates for probable DSM-5-TR PGD were 1.4% (n = 8) and 1.7% (n = 10), respectively and for probable ICD-11 PGD were 1.4% (n = 8) and 2.2% (n = 13), respectively. Age and gender of the deceased, age of the bereaved, greater grief severity, and comorbid psychopathology were positively associated with endorsement of the criterion. Findings demonstrate low endorsement of the cultural deviation criterion, that its inclusion excludes several potential PGD cases, and unanticipated associations with several factors raise questions about the criterion's validity.

Testing the latent structure of ICD-11 prolonged grief disorder symptoms in the U.K. adult population: An exploratory structural equation modeling approach

The latent structure of ICD-11 prolonged grief disorder (PGD), as measured using the International Prolonged Grief Disorder Scale (IPGDS), was assessed in a large general population sample of bereaved adults from the United Kingdom. Data were derived from Wave 5 of the COVID-19 Psychological Research Consortium Study (C19PRC-UK). Exploratory structural equation modeling (ESEM) was used to assess the latent structure of the IPGDS. Identified factors were explored in relation to known correlates (i.e., gender, age of the bereaved, income, bereavement timeframe, age of the deceased) and functional impairment. Three factors-Loss, Emotional Numbing, and Emotional Reactivity-emerged in the best-fitting ESEM model, χ2 (92, N = 1,763) = 273.70, p < .001, CFI = .97, TLI = .96, RMSEA = .048, SRMR = .020. All factors were significantly associated with bereavement timeframe, βs = -.15--.20, and age of the deceased, βs = -.22--.31. Lower income predicted both Loss and Emotional Numbing; younger age of the bereaved predicted both Loss and Emotional Reactivity; and female gender was a unique predictor of Loss. Functional impairment was associated only with Emotional Numbing, β = .89. The findings highlight the multidimensional structure of PGD. However, the patterns of factor/cross-factor loadings observed in the present study indicate that a "simple" structure was not attainable. Associations between factors and covariates attest to the discriminant validity of the factors, and the association between Emotional Numbing and functional impairment may afford clinicians an opportunity to better understand and target the most disruptive features of grief.

Psychometric evaluation of the Swedish Traumatic Grief Inventory Self-Report Plus (TGI-SR+) in bereaved parents

The International Classification of Diseases Eleventh Edition (ICD-11), and the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), now include prolonged grief disorder (PGD). Since criteria for PGD in both classification systems differ from prior proposed grief disorders and each other, the validation of a single instrument to screen for prolonged grief (PG) symptoms of both new diagnoses is critical for bereavement research and care. Therefore, we evaluated the psychometric properties of the Swedish version of the Traumatic Grief Inventory Self-Report Plus (TGI-SR+). Two-hundred and forty-eight bereaved parents completed questions about sociodemographic and loss-related variables, the TGI-SR+, and symptom measures of post-traumatic stress (PTS), depression and an older measure of PG symptoms, the Prolonged Grief Disorder-13 (PG-13). Confirmatory factor analyses showed that a one-factor model best fit DSM-5-TR and ICD-11 PG symptoms and the analyses of the internal consistency and inter-item correlations showed that these symptoms could be reliably assessed. In support of convergent validity, DSM-5-TR and ICD-11 PG symptoms correlated with symptoms of PTS, depression and PG assessed with the PG-13. In support of known-groups validity, DSM-5-TR and ICD-11 PG symptoms were higher among lower educated (vs. higher educated) participants and related negatively to time since loss. ROC analyses showed optimal cut-off score of ≥71 and ≥72 to determine probable caseness for DSM-5-TR and ICD-11 PGD, respectively. Results support the reliability and validity of the Swedish TGI-SR+ as a screening instrument for PG in research and bereavement care.

Online cognitive behavioral therapy for prolonged grief after traumatic loss: a randomized waitlist-controlled trial

Prolonged grief disorder, a condition characterized by severe, persistent, and disabling grief, is newly included in ICD-11 and DSM-5-TR. Prolonged grief symptoms can be effectively treated with face-to-face or internet-delivered cognitive behavioral therapy. Traumatic losses may elicit higher prevalence of severe grief reactions. While face-to-face cognitive behavioral therapy appears efficacious in treating prolonged grief symptoms in traumatically bereaved individuals, it is not yet clear if internet-based cognitive behavioral therapy is efficacious for this population. Therefore, we investigated the efficacy of a 12-week internet-delivered cognitive behavioral therapy for people bereaved through traffic accidents in a randomized waitlist-controlled trial (registration number: NL7497, Dutch Trial Register). Forty adults bereaved though a traffic accident were randomized to internet-based cognitive behavioral therapy (n = 19) or a waitlist control condition (n = 21). Prolonged grief, post-traumatic stress, and depression symptoms were assessed at baseline, post-treatment, and 8-week follow-up. Dropout in the treatment condition was relatively high (42%) compared to the control condition (19%). Nevertheless, multilevel analyses showed that internet-based cognitive behavioral therapy strongly reduced prolonged grief, post-traumatic stress, and depression symptoms relative to the control condition at post-treatment and follow-up. We conclude that internet-based cognitive behavioral therapy appears a promising treatment for traumatically bereaved adults.

Prolonged grief disorder in ICD-11 and DSM-5-TR: Challenges and controversies

Prolonged grief disorder has recently been added to the International Classification of Diseases, 11th edition and the Diagnostic and Statistical Manual of Mental Disorders 5, Text Revision. This historical development is often presented as a linear process culminating in the inclusion of valid, clinically relevant prolonged grief disorder criteria in diagnostic handbooks. The present contribution provides an overview of work contradicting this dominant narrative. First, I show that the developmental history of prolonged grief disorder has been nonlinear and that this yields questions on generalizability and problems with measurement of the newest criteria sets. Second, I highlight an important gap in the validity evidence: the distinction of prolonged grief disorder from normal grief. Third, I discuss concerns relating to the societal effects of the inclusion of prolonged grief disorder in diagnostic handbooks, including the medicalization of grief, development and adverse effects of pharmacotherapy and stigmatization. A more realistic, balanced view on the history, validity and societal impact of prolonged grief disorder appears appropriate. I recommend stringent validation of assessment instruments for prolonged grief disorder, convergence of criteria-sets, closing gaps in validity evidence and developing strategies to mitigate the negative effects of grief diagnoses.

Evaluation of the performance of instruments to diagnose grief disorders: A diagnostic meta-analysis

BACKGROUND

Prolonged or complicated grief disorder occurs in 9.8% of bereaved adults and can progress into adverse health effects if left unresolved. Evidence on the appropriate and specific diagnostic instrument for the assessment of prolonged or complicated grief disorders is lacking.

OBJECTIVE

The purpose of this study was to evaluate the performance of the most widely used instruments to diagnose grief disorders, including The Inventory of Complicated Grief, The Inventory of Complicated Grief - Revised, and the Prolonged Grief Disorder-13.

DESIGN

Diagnostic meta-analysis.

DATA SOURCES

PubMed, EMBASE, CINAHL, Medline, Scopus, Web of Science, and Cochrane were searched up to July 1, 2020.

METHODS

We included studies evaluating the sensitivity and specificity of grief disorders diagnostic tools against the comparator tests in individuals who experienced the loss of a family member. A diagnostic meta-analysis of pooled sensitivity and specificity, likelihood ratios, and area under curve were performed with a random-effect and hierarchical model.

RESULTS

In the current study, 3540 participants were involved. The six studies of the Inventory of Complicated Grief had pooled sensitivity of 0.93 (95% confidence interval: 0.87 to 0.97) and specificity of 0.96 (95% confidence interval: 0.92 to 0.98). The positive likelihood ratio was 23.4 (95% confidence interval: 11.2 to 49.0) and the negative likelihood ratio was 0.07 (95% confidence interval: 0.04 to 0.14) with area under curve value at 0.96 (95% confidence interval: 0.97 to 0.99). For Prolonged Grief Disorder-13, the three included studies' pooled sensitivity was 0.51 (95% confidence interval: 0.42 to 0.60), and the pooled specificity was 0.96 (95% confidence interval: 0.93 to 0.98). The Inventory of Complicated Grief-Revised evaluation could not be performed as only two articles from the same study were identified in this meta-analysis.

CONCLUSIONS

The Inventory of Complicated Grief is a highly recommend instrument to differentiate the case of grief disorders. Nurses and health care professionals can use the Inventory of Complicated Grief in the diagnosis of prolonged or complicated grief disorders due to its high sensitivity and specificity values. Further evaluations are needed for the use of Prolonged Grief Disorder-13 and Inventory of Complicated Grief-Revised.

REGISTRATION

The study is registered with the Open Science Framework (https://osf.io/bs8n6/?view_only=109e76e59efb4d7699153f62564f57ed). Tweetable abstract: Inventory of Complicated Grief is a highly recommend instrument with high sensitivity and specificity for diagnosing grief disorders.