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Dementia knowledge assessment scale: development and preliminary psychometric properties


Annear, MJ and Toye, C and Eccleston, CE and McInerney, FJ and Elliott, KJ and Tranter, BK and Hartley, T and Robinson, AL, Dementia knowledge assessment scale: development and preliminary psychometric properties, American Geriatrics Society Journal, 63, (11) pp. 2375-2381. ISSN 0002-8614 (2015) [Refereed Article]

Copyright Statement

2015, Copyright the Authors

DOI: doi:10.1111/jgs.13707


OBJECTIVES: To develop a reliable and valid dementia knowledge scale to address limitations of existing measures, support knowledge evaluation in diverse populations, and inform educational intervention development.

DESIGN: A five-stage, systematic scale development process was employed to construct and assess the psychometric properties of the Dementia Knowledge Assessment Scale (DKAS).

SETTING: Data for the study were generated in an online environment and during clinical dementia care placements from Australian (n = 1,321) and international respondents (n = 446).

PARTICIPANTS: Volunteers from a dementia-related massive open online course (n = 1,651), medical students on clinical placement in a residential aged care facility (n = 40), and members of the Australian health workforce (n = 76).

MEASUREMENTS: Psychometric properties of the DKAS were established using a literature review to assess the veracity of scale items, respondent feedback during pilot testing, a Delphi study with dementia experts, construction and review by an expert panel, evaluation of item difficulty, item-total and interitem correlations. Principal components analysis (PCA) was also performed along with measures of test-retest reliability, internal consistency, construct validity, and concurrent validity.

RESULTS: The pilot DKAS was reduced from 40 to 27 items during analysis. PCA identified four distinct and interpretable factors. The revised DKAS displays high levels of test-retest reliability; internal consistency; and preliminary construct, concurrent, and factorial validity.

CONCLUSION: The 27-item DKAS is reliable and shows preliminary validity for the assessment of knowledge deficiencies and change in those who provide care and treatment for people with dementia.

Item Details

Item Type:Refereed Article
Keywords:Interprofessional education, pre-qualifying, interprofessional care, surveys
Research Division:Health Sciences
Research Group:Health services and systems
Research Field:Aged health care
Objective Division:Health
Objective Group:Specific population health (excl. Indigenous health)
Objective Field:Health related to ageing
UTAS Author:Annear, MJ (Dr Michael Annear)
UTAS Author:Toye, C (Associate Professor Christine Toye)
UTAS Author:Eccleston, CE (Dr Claire Eccleston)
UTAS Author:McInerney, FJ (Professor Fran McInerney)
UTAS Author:Elliott, KJ (Dr Kate-Ellen Elliott)
UTAS Author:Tranter, BK (Professor Bruce Tranter)
UTAS Author:Hartley, T (Dr Thomas Hartley)
UTAS Author:Robinson, AL (Professor Andrew Robinson)
ID Code:104057
Year Published:2015
Web of Science® Times Cited:65
Deposited By:Wicking Dementia Research and Education Centre
Deposited On:2015-11-02
Last Modified:2017-11-04

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