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A clinically feasible short version of the 15-item geriatric depression scale extracted using item response theory in a sample of adults aged 85 years and older
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine. (Sunderby Research Unit)
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine.ORCID iD: 0000-0002-5271-4780
Umeå University, Faculty of Medicine, Department of Nursing.ORCID iD: 0000-0002-3754-5026
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine.
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2022 (English)In: Aging & Mental Health, ISSN 1360-7863, E-ISSN 1364-6915, Vol. 26, no 2, p. 431-437Article in journal (Refereed) Published
Abstract [en]

Objectives: To extract the items most suitable for a short version of the 15-item Geriatric Depression Scale (GDS-15) in a sample of adults aged ≥ 85 years using item response theory (IRT).

Method: This population-based cross-sectional study included 651 individuals aged ≥ 85 years from the Umeå 85+/GErontological Regional DAtabase (GERDA) study. Participants were either community dwelling (approximately 70%) or resided in institutional care (approximately 30%) in northern Sweden and western Finland in 2000–2002 and 2005–2007. The psychometric properties of GDS-15 items were investigated using an IRT-based approach to find items most closely corresponding to the GDS-15 cut off value of ≥5 points. Receiver operating characteristic curves were used to compare the performance of the proposed short version with that of previously proposed short GDS versions.

Results: GDS-15 items 3, 8, 12, and 13 best differentiated respondents’ levels of depressive symptoms corresponding to the GDS-15 cut off value of ≥5, regardless of age or sex, and thus comprise the proposed short version of the scale (GDS-4 GERDA). For the identification of individuals with depression (total GDS-15 score ≥ 5), the GDS-4 GERDA with a cut-off score of ≥2 had 92.9% sensitivity and 85.0% specificity.

Conclusion: The GDS-4 GERDA could be used as an optimized short version of the GDS-15 to screen for depression among adults aged ≥ 85 years.

Place, publisher, year, edition, pages
Routledge, 2022. Vol. 26, no 2, p. 431-437
Keywords [en]
80 and over, Aged, depression, item response theory, psychiatric status rating scales, psychometrics, ROC curve
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Other Health Sciences
Identifiers
URN: urn:nbn:se:umu:diva-180763DOI: 10.1080/13607863.2021.1881759ISI: 000616203400001Scopus ID: 2-s2.0-85100803309OAI: oai:DiVA.org:umu-180763DiVA, id: diva2:1531072
Funder
Konung Gustaf V:s och Drottning Victorias FrimurarestiftelseRegion VästerbottenNorrbotten County CouncilVisare NorrSwedish Research Council, K2014-99X-22610-01-6Available from: 2021-02-25 Created: 2021-02-25 Last updated: 2023-03-24Bibliographically approved

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Johansson, SannaLövheim, HugoOlofsson, BirgittaGustafson, YngveNiklasson, Johan

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CiteExportLink to record
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