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The ICD-11 and DSM-5-TR Prolonged Grief Criteria: Validation of the Traumatic Grief Inventory-Self Report Plus Using Exploratory Factor Analysis and Item Response Theory.

Abstract : More recently, the prolonged grief disorder (PGD) has been recognized as a mental health disorder following bereavement, which is distinct from depression and PTSD. However, the number and proposed symptom items vary across the ICD-11 and the DSM-5-TR criteria for PG. The Traumatic Grief Inventory-Self Report Plus (TGI-SR+), which is an updated version of the TGI-SR, is currently the only robust instrument that assesses PG according to the ICD-11 and DSM-5-TR criteria. For research and clinical use among French-speaking countries, the forward-backward procedure was applied to translate the TGI-SR+ into French language. Exploratory factor analysis and parallel analysis converged towards a two-dimensional structure for the TGI-SR+, representing adaptation difficulties and traumatic separation distress. However, items mapping onto ICD-11 and DSM-5-TR criteria for PG represented a one-dimensional structure. Findings based on item response theory method provided strong evidence for discriminative characteristics of the items The internal reliability was excellent for the TGI-SR+ (McDonald's ω = .97) and ICD-11 and DSM-5-TR criteria for PGD (McDonald's ω = .95, respectively). We also demonstrated a very high temporal stability for the TGI-SR+ total score (ICC\,=\,.91, p\,<\,.0001) and ICD-11 PGD and DSM-5-TR PGD (ICC\,=\,.90, and ICC\,=.88, ps\,<\,.0001, respectively). The concurrent validity of the instrument was also demonstrated, such that the TGI-SR+ total score and all combinations were positively and significantly associated with the levels of depression, anxiety, and post-traumatic stress symptoms. However, the effect sizes were moderate. We conclude that for research and clinical use among French bereaved populations, the TGI-SR+ is a sound tool with very good psychometric properties.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03711176
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Soumis le : vendredi 1 juillet 2022 - 11:14:06
Dernière modification le : vendredi 5 août 2022 - 11:26:13

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Cyrille Kossigan Kokou-Kpolou, Lonneke I. M. Lenferink, Alice Einloft Brunnet, Sunyoung Park, Olga Megalakaki, et al.. The ICD-11 and DSM-5-TR Prolonged Grief Criteria: Validation of the Traumatic Grief Inventory-Self Report Plus Using Exploratory Factor Analysis and Item Response Theory.. Clinical Psychology & Psychotherapy, 2022, ⟨10.1002/cpp.2765⟩. ⟨hal-03711176⟩

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