Vorenholt, Ilse (2023) The Effect of Prolonged Grief Symptoms on the Quality of Life: A Longitudinal Study. Bachelor thesis, Psychology.
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Abstract
The two main classification handbooks within psychology, the Diagnostic and Statistical Manual of Mental Disorders 5 Text Revision (DSM-5-TR) and the International Classification of diseases eleventh edition (ICD-11), included a new form of pathological grief: prolonged grief disorder (PGD). To find evidence for the criterion validity of this new construct, the effect of prolonged grief symptoms on quality of life (QoL) was investigated through cross-sectional and ongitudinal analyses. A sample of 276 bereaved adults (mean age 54 years, 92% female) filled in a survey at baseline, 6 (n = 142), 12 (n = 135) months later. The Traumatic Grief Inventory-Self Report Plus was used to measure the independent variables ICD-11 and DSM-5-TR prolonged grief symptoms. The European Health Interview Survey - Quality of Life 8-item index was used to measure the dependent variable QoL. Two simple linear regression analyses demonstrated that T1 ICD-11 and DSM-5-TR prolonged grief symptoms related negatively to T1 QoL, supporting concurrent test-criterion validity. Four hierarchical regression analyses demonstrated that T1 ICD-11 and DSM-5-TR symptoms significantly predict QoL at T2 and T3 whilst controlling for T1 QoL, supporting predictive test-criterion validity. This means that we found evidence for both concurrent and predictive test-criterion validity of the criteria sets of the DSM-5-TR and ICD-11. Future research should assess the criterion validity with other relevant outcome constructs and assess other types of validity.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Supervisor name: | Eisma, M.C. and Roest, A.M. |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 17 Feb 2023 10:39 |
| Last Modified: | 17 Feb 2023 10:39 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/1697 |
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