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  • Title: Testing the distinctiveness of prolonged grief disorder from posttraumatic stress disorder and depression in large bereaved community samples.
    Author: Shevlin M, Redican E, Karatzias T, Hyland P.
    Journal: J Affect Disord; 2024 Oct 15; 363():214-220. PubMed ID: 39047948.
    Abstract:
    BACKGROUND: This study sought to test the distinctiveness of symptoms of prolonged grief disorder (PGD) from posttraumatic stress disorder (PTSD) and depression. METHODS: Confirmatory factor analysis (CFA) and target exploratory factor analysis (EFA), were used to test the distinctiveness of PGD from PTSD and depression symptoms in a large sample of adults bereaved for at least six months (N = 1917). Identified factors were explored in relation to demographic (i.e., age, gender) and loss-related (i.e., time since bereavement, nature of death, relationship to deceased, age of deceased, and frequency of contact with deceased) correlates. RESULTS: The CFA model provided a good fit to the data, while the target EFA provided a slightly improved fit. All items loading strongly and significantly onto their respectively factors, and the IGQ items had few significant cross-factor loadings. All demographic and loss-related variables (except for death of a sibling and death from other causes) were associated with each of the factors, however, these associations were strongest for the PGD factor. LIMITATIONS: Participants were recruited using a non-probability sampling method and were from a relatively affluent Western nation. CONCLUSION: Findings from the current study demonstrate that PGD reflects an empirically distinguishable albeit related disorder to PTSD and depression in a sample of bereaved adults. The identification of correlates common to PGD, PTSD, and depression, as well as those unique to PGD, affords a comprehensive understanding of the risk factors associated with bereavement-related psychopathology.
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