Evidence map›Paper›PMID 31463401›Full record

ArticleHeliyon2019

Evaluating hierarchical items of the geriatric depression scale through factor analysis and item response theory.

Nahathai Wongpakaran, Tinakon Wongpakaran, Pimolpun Kuntawong

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Article in Heliyon, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

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14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Nahathai WongpakaranDepartment of Psychiatry, Faculty of Medicine, Chiang Mai University, Thailand.
Tinakon WongpakaranDepartment of Psychiatry, Faculty of Medicine, Chiang Mai University, Thailand.
Pimolpun KuntawongDepartment of Psychiatry, Faculty of Medicine, Chiang Mai University, Thailand.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGeriatric depression scale (GDS) is a common screening tool for measuring depression among older adults. It employs a multi-factor structure and some differential item functioning (DIF) allowing different versions of GDS across cultures. The present study aimed to identify the short version of the hierarchical scale of GDS in which all items comprised the invariant item ordering, and items without DIF.

methodsParticipants and Measurement: A total of 803 participants, 70% female, with a mean age of 69.24 years (SD = 6.88) were enrolled from three geriatric units of tertiary care hospitals. All completed the 15-item GDS. Three methods of confirmatory factor analysis (CFA) with multiple indicators, multiple cause model, Mokken analysis and Rasch analysis were applied.

resultsItem 9 (prefer to stay at home) showed poor discriminatory power among all three methods. After removing DIF items due to sex and age, nine items remained suitable for the shortened version by CFA. When Mokken and Rasch analysis were applied, only six items remained for the hierarchical scale. Compared with other related shortened version of GDS, the new GDS-6 proved to have a comparable ability to detect depression as did the original 15-item GDS. LIMITATION: The new GDS-6 needs to be investigated for test-retest reliability to ensure temporal stability of the scale. This cross-sectional analysis needs replication.

conclusionThe GDS-6 derived from IRT had measurement properties and met criteria related to unidimensionality and ability to separate levels of depression. It was shown to be equal to or better in predicting performance compared with the original 15-item GDS.

Indexed as

Clinical psychologyConfirmatory factor analysisElderlyGDSMokken analysisMultiple indicator multiple cause modelPsychiatryPsychologyRasch analysisShort

Identifiers

PMID31463401
PMCPMC6706604

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.