Comparison of proposed diagnostic criteria for pathological grief using a sample of elderly bereaved spouses in Denmark: Perspectives on future bereavement research

Prevalence, comorbidities, and factors associated with prolonged grief disorder, posttraumatic stress disorder and complex posttraumatic stress disorder in refugees: a systematic review

BACKGROUND

The number of refugees worldwide is at an all-time high with many being exposed to potentially traumatic events and the loss of loved ones. The 11th revision of the International Statistical Classification of Diseases and Related Health Problems now includes prolonged grief disorder and complex posttraumatic stress disorder and revised criteria for posttraumatic stress disorder. An overview of these stress-related disorders among people who have become refugees is therefore needed. Consequently, we conducted a systematic review to determine prevalence rates, comorbidities, and associated factors for each of the disorders.

METHOD

We systematically searched PubMed, Web of Science, and PsycArticles to identify studies that reported prevalence rates, predictors or associated factors, and/or comorbid mental disorders for either (1) prolonged grief disorder, (2) posttraumatic stress disorder, or (3) complex posttraumatic stress disorder among refugees. The selection process followed the PRISMA guidelines.

RESULTS

A total of 36 studies met the inclusion criteria. Most of the studies were of high quality. There was substantial variation in prevalence rates by disorder, with prolonged grief ranging from 6 to 54%, posttraumatic stress disorder ranging from 0.4 to 80%, and complex posttraumatic stress disorder ranging from 3 to 74.6%. Pooled prevalence for posttraumatic stress disorder was estimated at 29.8% in treatment seeking samples and 9.92% in population samples. For complex posttraumatic stress disorder, it was estimated at 57.4% in treatment seeking samples and 7.8% in population samples. Posttraumatic stress disorder was among the most frequent comorbidities for prolonged grief disorder while depressive symptoms were the most frequently occurring co-morbidity across all three disorders. Sociodemographic variables, trauma exposure, and loss characteristics were associated with higher symptom severity. Postmigration living difficulties played an important role in prolonged grief and complex posttraumatic stress disorder.

CONCLUSION

The review revealed substantial differences in prevalence rates between the three studied disorders but underscored a very high prevalence of ICD-11 stress-related disorders among refugees. The identified associated factors point to subgroups that may be particularly at risk and establishes a foundational basis for targeted interventions and potential policy changes. Future research should incorporate longitudinal investigations and emphasize culturally sensitive assessments.

Cross-national analysis of the prevalence of prolonged grief disorder

BACKGROUND

Prolonged grief disorder (PGD) is now included as a diagnosis in international classification systems. Most research on PGD is based on Western populations, but first data from non-Western countries have recently become available. Little is still known about country-related effects on PGD's prevalence.

OBJECTIVE

Determining possible causes of variations in the prevalence of PGD as defined by DSM-5-TR and ICD-11 within and between countries.

METHODS

We retrieved data from 24 prevalence studies, the World Bank and the 2022 World Risk Report. Negative binomial regressions were used to explore methodological, loss-related and country context characteristics as predictors of PGD. The average rate of PGD was calculated using random effects models.

RESULTS

The included studies comprised 34 samples from 16 countries (20,347 participants). Non-probability sampling and older mean age of the sample as well as lower country vulnerability were associated with higher PGD rates. The average PGD prevalence was 13 % (95 % CI [11, 22]), varying from 5 % (95 % CI [3, 11]) in probability to 16 % (95 % CI [13, 25]) in non-probability samples.

LIMITATIONS

Samples from Europe and North America were overrepresented. For about half of the countries, data were available from only one sample.

CONCLUSIONS

While confirming the importance of studies' methodological quality, the results show that PGD is of public health relevance around the world, but especially common in less vulnerabled countries with better access to daily necessities and healthcare services, highlighting sociocultural impacts on grief processing. Further investigations of cross-national differences are needed.

Prevalence and Correlates of Complicated Grief in Military Primary Care: Implications for Healthcare Providers

Grief is a universal experience, but for approximately 1 in 10 individuals, grief can become impairing. Despite servicemembers' frequent exposure to death, research on grief in the military remains limited. The purpose of the study was to explore the prevalence and correlates of complicated grief (CG) in military primary care. A quantitative survey was conducted with 161 non-treatment-seeking service members, veterans, and their dependents, of whom 138 reported a significant loss. Results revealed that 35% of the respondents who were bereaved met the cut-off score of 25 on the Inventory of Complicated Grief (ICG). Furthermore, 10% met the cut-off score of 30 on the Prolonged Grief Disorder-13-Revised Scale (PG-13-R). Importantly, death by suicide and pre-existing mental health conditions were associated with greater symptom severity. These findings have important implications for primary care providers and other clinicians working with military populations.

Risk factors for prolonged grief symptoms: A systematic review and meta-analysis

BACKGROUND

The diagnosis Prolonged Grief Disorder (PGD) has recently been included in ICD-11 and DSM-5-TR. To identify individuals who need help coping with grief, knowledge is needed about who is at risk of developing PGD. We, therefore, conducted a comprehensive systematic review and meta-analysis of the available literature on risk factors for prolonged grief symptoms (PGS).

METHODS

Based on a literature search in PsycInfo, PubMed, Web of Science, and CINAHL, we included the most frequently investigated risk factors in a meta-analysis. The effect size correlation was used as the standardized measure of the strength of the association between the risk factor and PGS.

RESULTS

Based on 120 studies of 61.580 participants published between 1989 and 2023, 19 risk factors were included in the meta-analysis. For the adjusted associations, the strongest associations with PGS were pre-loss grief symptoms (ESr = 0.39, 95%CI[0.24-0.53]) and depression (ESr = 0.30, 95%CI[0.13-0.44]). Small, but statistically significant associations were observed for unexpected death, violent/unnatural death, low educational level, low income, female gender, anxious attachment style, and death of a child or partner.

CONCLUSIONS

An updated overview of risk factors for PGS is presented, including their predictive strength. The results offer knowledge that can aid prevention and early identification of people at risk of PGD.

Prolonged grief disorder prevalence in adults 65 years and over: a systematic review

BACKGROUND

Prolonged grief disorder (PGD) is a recently recognised mental health disorder with an estimated prevalence of 10% in the bereaved adult population. This review aims to appraise and summarise evidence relating to PGD in older adults (≥65 years), a growing population group, most likely to experience bereavement and often assumed to cope well.

METHOD

Literature from Medline, PsycINFO, CINAHL, Cochrane Library and Web of Science was searched. Epidemiological and non-epidemiological studies including data on frequency of PGD in older adults bereaved by mainly natural causes were included and a descriptive analysis undertaken.

RESULTS

From 2059 records, three epidemiological and six non-epidemiological studies were included. Most studies had good internal but not external validity. Conditional prevalence for PGD ranged between 3.2% and 48.8%. Heterogeneity in sample characteristics and study methodology contributed to this variability resulting in a descriptive analysis. The prevalence rate of 9.1% by Kersting et al was the best available estimate for PGD in older adults for western countries. The small number of epidemiological studies and the use of varying PGD-constructs which did not match International Classification of Diseases 11th Revision and Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition criteria were the main limiting factors.

CONCLUSION

This first review on PGD prevalence in older adults suggests that, despite studies' methodological short comings, a similar proportion of older adults experience PGD as the general bereaved adult population (1:10). With older adults forming the largest subgroup among the bereaved, health and social care systems need to adapt their provision of care to address the specific needs of older adults.

Do we all grieve the same? A multigroup test of the dimensional structure of prolonged grief disorder among Danish bereaved partners and children

Prolonged Grief Disorder (PGD) is a newly recognized mental disorder in ICD-11 and DSM-5-TR. Several studies using exploratory factor analysis have found a unidimensional structure of the Prolonged Grief-13 (PG-13) measure of PGD. The recently published ICD-11 proposal proposes a distinction between two clusters of symptoms: Separation distress symptoms and associated cognitive, emotional and behavioral symptoms. The aim of the current study is to test competing factor structures of PGD in Danish samples of bereaved. Confirmatory factor analysis was used to test competing models of PGD among two samples of in total 1093 adults that completed the questionnaires 6 months post loss of either a parent or a partner. Convergent and divergent validity was tested via the relationship to depression, anxiety, post-traumatic stress disorder (PTSD) and general wellbeing using regression analysis. The Danish version of the PG 13 appeared to be both valid and reliable. A two-factor model reflecting the division of core- and associated symptoms of prolonged grief disorder provided the best description of the PG-13 among Danish bereaved adults and there was evidence of partial structural invariance of the latent structure of PGD across bereavement types. Convergent and divergent validity analysis supported the validity of the two-factor model of PGD. SIGNIFICANT OUTCOMES: : A latent variable model differing between core- and associated symptomatology of grief is supported. The Danish translation of PG-13 is a valid measure of prolonged grief symptomatology.

Pandemic Grief Scale in detection of grief reaction among physicians in COVID-19 era

Background

Physicians are considered one of the most vulnerable groups who might develop pandemic grief during this critical time of COVID-19 infection, and this grief reaction might have deleterious effects on their life. This cross-sectional observational online study aimed to investigate the pandemic grief reaction among physicians and its burden on their aspects of life.

Results

Socio-demographic characteristics of 900 physicians were collected. The Pandemic Grief Scale (PGS) was used to detect the grief reaction among them and also Patient Health Depression Questionnaire-9 (PHQ-9) was used to evaluate the depressive manifestations. Sheehan Disability Scale was considered to investigate the burden of this grief on different aspects of life. The study revealed high mean score of Pandemic Grief Scale: 11.12 ± 2.34; the mean score of Sheehan Disability Scale was 17.63 ± 5.17, and the mean score of Patient Health Depression Questionnaire-9 was 19.89 ± 4.27.

Conclusion

Pandemic grief is commonly experienced by the physicians during this COVID-19 era due to sudden loss of loved one or the cases themselves. This pandemic grief has drastic effect on domains of physicians’ life.

Time elapsed since loss or grief persistency? Prevalence and predictors of ICD-11 prolonged grief disorder using different applications of the duration criterion

BACKGROUND

Prolonged grief disorder (PGD), included in the ICD-11, encompasses a six-month duration criterion, but whether this covers 'time since loss' or 'grief persistency' is unclear. The study estimated prevalence and predictors of probable ICD-11 PGD using different applications of the duration criterion.

METHODS

A register-sampled cohort of bereaved spouses completed self-report questionnaires at two (T1, N=847), six (T2, N=777), and eleven months (T3, N=753) post-loss. The duration criterion was operationalized as single-point PGD (meeting criteria minimally six months post-loss; T2 or T3) and dual-point PGD (meeting criteria at two assessments separated by months; T1+T2 or T2+T3).

RESULTS

Single-point PGD prevalence rates (~15-20%) were significantly higher than dual-point prevalence rates (~10%). While single assessments of PGD varied between T2 and T3, the dual-point prevalence rates did not significantly differ. Early probable grief caseness emerged as the strongest predictor for later PGD.

LIMITATIONS

Without a structured clinical interview, only probable cases of PGD were identified. Caseness relied on a diagnostic algorithm, created by mapping items from different self-report questionnaires. Time frames between assessments did not cover an entire six-month period.

CONCLUSIONS

Momentarily assessed, six-month PGD symptomatology may represent a fluctuating, but remitting grief process for some individuals. Further research could test whether multiple diagnostic indicators during the first year of bereavement improve the identification of genuinely prolonged grief reactions.

What Exactly Is "Complicated" Grief? A Scoping Research Literature Review to Understand Its Risk Factors and Prevalence

Most people will experience bereavement grief, but some suffer from persistent or prolonged (PoP) grief, grief that used to be identified as "complicated" before recent DSM-5 and ICD-11 definitional developments. In 2020, a scoping literature review was undertaken to identify and consolidate contemporary evidence from research articles published in 2018 or 2019 in paper-based and open access peer-review journals on: (a) the incidence or prevalence of PoP grief, and (b) who develops it or is diagnosed as suffering from it, and correspondingly what causative factors or predictors are associated with PoP grief. All of the 11 identified research articles reported an incidence or prevalence rate, with these varying greatly, but with a much higher rate now that a 6-month post-death measurement timeframe is used. The predictors or factors among people who were identified as having PoP grief also varied considerably, although sudden and unexpected deaths were often implicated.

Symptoms of prolonged grief, posttraumatic stress, and depression in recently bereaved people: symptom profiles, predictive value, and cognitive behavioural correlates

PURPOSE

Prior latent class analyses (LCA) have focused on people who were bereaved more than 6 months earlier. Research has yet to examine patterns and correlates of emotional responses in the first few months of bereavement. We examined whether subgroups could be identified among very recently (≤ 6 months) bereaved adults, based on their endorsement of symptoms of prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD), and depression. Associations of class membership with overall disturbed grief, PTSD, and depression-assessed concurrently and at 6 months follow-up-were examined. Furthermore, we examined differences between classes regarding socio-demographics, loss-related, and cognitive behavioural variables.

METHODS

PGD, PTSD, and depression self-report data from 322 Dutch individuals bereaved ≤ 6 months earlier were subjected to LCA; N = 159 completed the follow-up assessment. Correlates of class membership were examined.

RESULTS

Three classes were identified: a low symptom class (N = 114; 35.4%), a predominantly PGD class (N = 96; 29.8%), and a high symptom class (N = 112; 34.8%). PGD, PTSD, and depression scores (assessed concurrently and at 6 months follow-up) differed significantly between classes, such that low symptom class < predominantly PGD class < high symptom class. Being a woman, younger, more recently bereaved, experiencing deaths of a partner/child and unnatural losses, plus maladaptive cognitions and avoidance behaviours were associated with membership of the pervasive symptom classes.

CONCLUSION

In the first 6 months of bereavement, meaningful subgroups of bereaved people can be distinguished, which highlights the relevance of early detection of people with elevated bereavement-related distress and offering them preventive interventions that foster adaptation to loss.

A comparison of prevalence and risk factor profiles of prolonged grief disorder among French and Togolese bereaved adults

BACKGROUND

With the introduction of the prolonged grief disorder (PGD) in the ICD-11 and most likely in the future DSM-5-TR, there is clinical need to examine cultural variations in grief phenomenon. We tested whether grief symptoms differ cross-culturally by examining the prevalence rates and predictors of PGD among French and Togolese bereaved individuals.

METHODS

The sample comprised 235 widowed persons (73 French and 162 Togolese participants). They all completed the Prolonged Grief Scale-11 items. There were no statistically significant differences between both groups in terms of sociodemographic information (except for education). However, they differed on loss-related characteristics. We used two different symptom-diagnostic tests to estimate the prevalence rates.

RESULTS

We found that French and Togolese bereavers reported almost similar PGD prevalence rates (21.9% [95% CI 0.13, 0.36] and 15.4% [95% CI 0.10, 0.23], respectively for the first test, 26% [95% CI 0.16, 0.41] and 17.3% [95% CI 0.12, 0.25], respectively for the second test). Through regression analyses, PGD severity was predicted by low education, being unemployed, long duration of a marital relationship, and traumatic death in the French sample, whereas it was predicted by being male and highly educated in the Togolese sample. Both groups only shared a recent bereavement period as a common risk factor.

CONCLUSIONS

Even though French and Togolese widowed persons reported almost similar prevalence rates of PGD, etiology, risk, and protective factors are culturally distinctive. It is critical to consider cultural and individual differences when conducting research on diagnosis and intervention in cases of prolonged grief.

Validation of the prolonged grief scale (PG-13) and investigation of the prevalence and risk factors of prolonged grief disorder in Turkish bereaved samples

The aim of this study was to validate the Turkish version of the Prolonged Grief Scale (PG-13) and to determine the prevalence and predictors of prolonged grief disorder (PGD). Data were gathered from two independent samples of 306 (Study 1) and 271 (Study 2) bereaved adults to determine if findings in one sample could be replicated in the other. The results supported the one-factor structure of PG-13. PGD prevalence rates were 11.4% in Study 1 and 10% in Study 2. Lower level meaning reconstruction and unnatural cause of death were found as risk factors for the PGD diagnosis in both studies.

Shame, guilt, and pride after loss: Exploring the relationship between moral emotions and psychopathology in bereaved adults

BACKGROUND

Self-blame following bereavement has been implicated in the development of post-loss psychopathology. However, prior studies have not distinguished between the emotions of shame versus guilt. This study examined the cross-sectional associations among bereavement-related shame, bereavement-related guilt, and two mental disorders that commonly arise after bereavement: complicated grief and depression. In addition, exploratory analyses examined the associations between bereavement-related pride and post-loss psychopathology.

METHODS

Participants included 92 bereaved adults who experienced the death of a family member at least one year prior to the study. Participants completed self-report measures of complicated grief symptoms, depression symptoms, shame, guilt, and pride.

RESULTS

Shame and guilt were positively correlated with complicated grief and depression symptoms. When controlling for their shared variance, only shame remained a significant predictor of post-loss psychopathology. Follow-up analyses indicated that the effect of guilt on psychopathology depended on the level of shame, and vice versa. At low shame, guilt predicted psychopathology; however guilt did not predict psychopathology at moderate to high shame. At low to moderate guilt, shame predicted psychopathology; however shame did not predict psychopathology at high guilt. Pride negatively predicted depression symptoms, but not complicated grief symptoms, when we controlled for shame and guilt.

LIMITATIONS

Limitations include the cross-sectional design and modest sample size.

CONCLUSIONS

Our analyses identify shame as the more pathogenic moral emotion for bereaved adults. However, whereas guilt in the absence of shame is often considered adaptive, we found that guilt predicted greater psychological distress at low levels of shame in this sample.

Comparison of six proposed diagnostic criteria sets for disturbed grief

Increased recognition that grief may turn into a disorder led to the inclusion of Persistent Complex Bereavement Disorder (PCBD) in DSM-5 and Prolonged Grief Disorder (PGD) in ICD-11. Four additional criteria sets for disturbed grief have been proposed in recent years: Prigerson et al. proposed criteria for PGD ("PGD-2009″), Maercker et al. presented an ICD-11 beta draft version of PGD ("PGD-BD"), Shear et al. put forth criteria for complicated grief ("CG"), and, recently, criteria for PGD in DSM-5-TR have been proposed. This study sought to evaluate these six sets in one sample, which has not been done before. Using self-reported data from 855 bereaved individuals, we examined the (i) dimensionality, (ii) number of possible symptom combinations to meet criteria for caseness, (iii) prevalence rates and diagnostic agreement, (iv) concurrent validity, and (v) socio-demographic and loss-related correlates for each set. Criteria for PCBD were best represented by a three-factor structure and CG by a two-factor structure. Symptoms of ICD-11 PGD, PGD-2009, PGD-BD, and PGD-DSM-5-TR formed a single dimension. Prevalence rates varied between ~10% and ~20%. Diagnostic agreement between sets was substantial. Sets differed in terms of possible symptom combinations and had comparable concurrent validity and socio-demographic and loss-related correlates.

Prolonged Grief Disorder and the Cultural Crisis

Prolonged grief disorder (PGD) is included as a new mental health disorder in the 11th edition of the International Classification of Diseases (ICD-11). Understandably, this has boosted research efforts to investigate this newcomer to psychopathology. However, the use of different diagnostic algorithms has resulted in substantially different prevalence rates both within and across cultural groups. Furthermore, global applicability of the new criteria outside of the Global North has not been yet been established. This perspective presents key findings from Asian research groups and discusses the roadblocks to unified PGD research, including the heterogeneric use of diagnostic algorithms and the lack of cultural compatibility of ICD-11 items. The authors discuss the key issues and address implications for practice.

When does grief become pathological? Evaluation of the ICD-11 diagnostic proposal for prolonged grief in a treatment-seeking sample

Background: Prolonged grief disorder (PGD) will be newly included in the ICD-11, while a clinically similar diagnosis, persistent complex bereavement disorder (PCBD), has already been added to the DSM-5. Only few studies have evaluated these criteria-sets for prolonged grief. Objective: The aim of this study was to evaluate the ICD-11 accessory symptom threshold and compare the diagnostic performance of the two criteria-sets in treatment-seeking bereaved persons. Method: 113 grief treatment-seeking bereaved persons completed the Interview for Prolonged Grief-13. We used receiver operator characteristic analysis to determine an optimum ICD-11 accessory symptom threshold. We calculated diagnostic rates for PGD and PCBD and examined associations of PGD and PCBD caseness with concurrently assessed psychopathology and prolonged grief symptoms assessed one month later. Results: An ICD-11 threshold of six accessory symptoms distinguished optimally between interview-diagnosed participants with and without prolonged grief. The prevalence of PGD (69%) was significantly higher than that of PCBD (48%) and of PGD with a 6-symptom threshold (47%). PGD caseness was associated with the relation to the deceased, 6-symptom threshold PGD and PCBD caseness with the time since loss. All criteria-sets were linked to concurrent prolonged grief, depression, and general mental distress. PCBD and 6-symptom threshold PGD but not PGD were associated with prolonged grief severity one month later. Conclusions: The results support the validity of PGD and PCBD but, at the same time, they provide further support for differing prevalence rates. Using an empirically determined ICD-11 accessory symptom threshold could prevent the pathologisation of grief reactions.

Comparison of DSM-5 criteria for persistent complex bereavement disorder and ICD-11 criteria for prolonged grief disorder in help-seeking bereaved children

BACKGROUND

Persistent complex bereavement disorder (PCBD) is a disorder of grief that newly entered DSM-5. Prolonged grief disorder (PGD) is a disorder of grief included in ICD-11. No prior studies examined and compared the dimensionality, prevalence, and concurrent validity of both conditions among bereaved children.

METHODS

With data from 291 help-seeking bereaved 8-18 year old children, we used confirmatory factor analysis to evaluate the fit of different factor models for PCBD and PGD. In addition, we determined diagnostic rates for probable PCBD and PGD and calculated associations of PCBD and PGD caseness with concurrently assessed symptoms of overall disturbed grief, depression, posttraumatic stress, and parent-rated problem behavior.

RESULTS

For PCBD and PGD, one-factor models-with all symptoms forming a unidimensional factor of disturbed grief-fit the data best. The prevalence of probable DSM-5 PCBD (3.4%) was significantly lower than ICD-11 PGD (12.4%). Both PCBD and PGD were significantly associated with concurrently assessed overall disturbed grief, depression, and posttraumatic stress; associations with parent-rated problems were moderate.

LIMITATIONS

Findings were based on self-reported ratings of symptoms, obtained from three different scales not specifically designed to assess PCBD and PGD. The use of a help-seeking sample limits the generalization of findings to bereaved children generally.

CONCLUSIONS

Findings support the validity of DSM-5 PCBD and ICD-11 PGD. Prevalence rates of both constructs differ. This needs further scrutiny.