Abstract
Objective: The prevalence of dementia and cognitive impairment is higher in Aboriginal Australians compared to the national population, increasing the need to understand cognitive impairment in this at-risk population. This article reports normative data for a range of commonly used cognitive tests, in a population-based small normative sample of older Aboriginal Australians living in urban/regional New South Wales.
Method: Participants included a representative random sample of community-dwelling older adults (60 years and older) with no cognitive impairment (n = 31), mild cognitive impairment (MCI; n = 38), or dementia diagnosis (n = 35), all from the Koori Growing Old Well Study. Cognitive tests included the Addenbrooke's Cognitive Examination Revised (ACE-R), Digit Span (Forward and Backward), Logical Memory, and the Oral Trail Making Test (A and B).
Results: Descriptive statistics and percentile scores for each test were reported for the normative sample. Comparison of performance between the diagnostic groups showed significant differences between the groups on most cognitive tests. The control group consistently performed better than the dementia group; and better than the MCI group on all tests, except for simple attention and sequencing tasks (Digit Span Forward and Oral Trail Making A). The MCI group also scored better than the dementia group on all tests, except for the Logical Memory Recognition task.
Conclusion: Results support the utility of these cognitive tests that are commonly used in clinical and research settings, and demonstrate that these tests can discriminate between diagnostic groups in Aboriginal Australians. The normative data provided will enhance cognitive assessment of individuals within this population.
| Language | English |
|---|---|
| Journal | Australian Journal of Psychology |
| DOIs | |
| State | E-pub ahead of print - 7 Jan 2019 |
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Cognitive test norms and comparison between healthy ageing, mild cognitive impairment, and dementia : A population-based study of older Aboriginal Australians. / Lavrencic, Louise M.; Bennett, Hayley; Daylight, Gail; Draper, Brian; Cumming, Robert; Mack, Holly; Garvey, Gail; Lasschuit, Danielle; Hill, Thi Yen; Chalkley, Simon; Delbaere, Kim; Broe, Gerald A.; Radford, Kylie.
In: Australian Journal of Psychology, 07.01.2019.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Cognitive test norms and comparison between healthy ageing, mild cognitive impairment, and dementia
T2 - Australian Journal of Psychology
AU - Lavrencic,Louise M.
AU - Bennett,Hayley
AU - Daylight,Gail
AU - Draper,Brian
AU - Cumming,Robert
AU - Mack,Holly
AU - Garvey,Gail
AU - Lasschuit,Danielle
AU - Hill,Thi Yen
AU - Chalkley,Simon
AU - Delbaere,Kim
AU - Broe,Gerald A.
AU - Radford,Kylie
PY - 2019/1/7
Y1 - 2019/1/7
N2 - Objective: The prevalence of dementia and cognitive impairment is higher in Aboriginal Australians compared to the national population, increasing the need to understand cognitive impairment in this at-risk population. This article reports normative data for a range of commonly used cognitive tests, in a population-based small normative sample of older Aboriginal Australians living in urban/regional New South Wales. Method: Participants included a representative random sample of community-dwelling older adults (60 years and older) with no cognitive impairment (n = 31), mild cognitive impairment (MCI; n = 38), or dementia diagnosis (n = 35), all from the Koori Growing Old Well Study. Cognitive tests included the Addenbrooke's Cognitive Examination Revised (ACE-R), Digit Span (Forward and Backward), Logical Memory, and the Oral Trail Making Test (A and B). Results: Descriptive statistics and percentile scores for each test were reported for the normative sample. Comparison of performance between the diagnostic groups showed significant differences between the groups on most cognitive tests. The control group consistently performed better than the dementia group; and better than the MCI group on all tests, except for simple attention and sequencing tasks (Digit Span Forward and Oral Trail Making A). The MCI group also scored better than the dementia group on all tests, except for the Logical Memory Recognition task. Conclusion: Results support the utility of these cognitive tests that are commonly used in clinical and research settings, and demonstrate that these tests can discriminate between diagnostic groups in Aboriginal Australians. The normative data provided will enhance cognitive assessment of individuals within this population.
AB - Objective: The prevalence of dementia and cognitive impairment is higher in Aboriginal Australians compared to the national population, increasing the need to understand cognitive impairment in this at-risk population. This article reports normative data for a range of commonly used cognitive tests, in a population-based small normative sample of older Aboriginal Australians living in urban/regional New South Wales. Method: Participants included a representative random sample of community-dwelling older adults (60 years and older) with no cognitive impairment (n = 31), mild cognitive impairment (MCI; n = 38), or dementia diagnosis (n = 35), all from the Koori Growing Old Well Study. Cognitive tests included the Addenbrooke's Cognitive Examination Revised (ACE-R), Digit Span (Forward and Backward), Logical Memory, and the Oral Trail Making Test (A and B). Results: Descriptive statistics and percentile scores for each test were reported for the normative sample. Comparison of performance between the diagnostic groups showed significant differences between the groups on most cognitive tests. The control group consistently performed better than the dementia group; and better than the MCI group on all tests, except for simple attention and sequencing tasks (Digit Span Forward and Oral Trail Making A). The MCI group also scored better than the dementia group on all tests, except for the Logical Memory Recognition task. Conclusion: Results support the utility of these cognitive tests that are commonly used in clinical and research settings, and demonstrate that these tests can discriminate between diagnostic groups in Aboriginal Australians. The normative data provided will enhance cognitive assessment of individuals within this population.
KW - Aboriginal Australians
KW - dementia
KW - Indigenous Australians
KW - mild cognitive impairment
KW - neuropsychological assessment
KW - normative data
UR - http://www.scopus.com/inward/record.url?scp=85059641442&partnerID=8YFLogxK
U2 - 10.1111/ajpy.12241
DO - 10.1111/ajpy.12241
M3 - Article
JO - Australian Journal of Psychology
JF - Australian Journal of Psychology
SN - 0004-9530
ER -