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A validation study of the Hong Kong version of Montreal Cognitive Assessment (HK-MoCA) in Chinese older adults in Hong Kong

Hong Kong medical journal = Xianggang yi xue za zhi, 2014-12, Vol.20 (6), p.504-510 [Peer Reviewed Journal]

2014. This work is published under https://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1024-2708 ;EISSN: 2226-8707 ;DOI: 10.12809/hkmj144219 ;PMID: 25125421

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  • Title:
    A validation study of the Hong Kong version of Montreal Cognitive Assessment (HK-MoCA) in Chinese older adults in Hong Kong
  • Author: Yeung, P Y ; Wong, L L ; Chan, C C ; Leung, Jess L M ; Yung, C Y
  • Subjects: Activities of daily living ; Aged ; Alzheimer's disease ; Asian Continental Ancestry Group ; Cardiovascular disease ; Cognitive ability ; Cognitive Dysfunction - diagnosis ; Cronbach's alpha ; Cross-Sectional Studies ; Dementia ; Education ; Female ; Geriatric Assessment ; Geriatrics ; Health Services for the Aged ; Hong Kong ; Hospitals ; Humans ; Hypotheses ; Male ; Mental disorders ; Neuropsychological Tests ; Older people ; Patients ; Reproducibility of Results ; Validation studies
  • Is Part Of: Hong Kong medical journal = Xianggang yi xue za zhi, 2014-12, Vol.20 (6), p.504-510
  • Description: To validate the Hong Kong version of Montreal Cognitive Assessment (HK-MoCA) in identification of mild cognitive impairment and dementia in Chinese older adults. Cross-sectional study. Cognition clinic and memory clinic of a public hospital in Hong Kong. A total of 272 participants (dementia, n=130; mild cognitive impairment, n=93; normal controls, n=49) aged 60 years or above were assessed using HK-MoCA. The HK-MoCA scores were validated against expert diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders (4th ed) criteria for dementia and Petersen's criteria for mild cognitive impairment. Statistical analysis was performed using receiver operating characteristic curve and regression analyses. Additionally, comparison was made with the Cantonese version of Mini-Mental State Examination and Global Deterioration Scale. The optimal cutoff score for the HK-MoCA to differentiate cognitive impaired persons (mild cognitive impairment and dementia) from normal controls was 21/22 after adjustment of education level, giving a sensitivity of 0.928, specificity of 0.735, and area under the curve of 0.920. Moreover, the cutoff to detect mild cognitive impairment was 21/22 with a sensitivity of 0.828, specificity of 0.735, and area under the curve of 0.847. Score of the Cantonese version of the Mini-Mental State Examination to detect mild cognitive impairment was 26/27 with a sensitivity of 0.785, specificity of 0.816, and area under the curve of 0.857. At the optimal cutoff of 18/19, HK-MoCA identified dementia from controls with a sensitivity of 0.923, specificity of 0.918, and area under the curve of 0.971. The HK-MoCA is a useful cognitive screening instrument for use in Chinese older adults in Hong Kong. A score of less than 22 should prompt further diagnostic assessment. It has comparable sensitivity with the Cantonese version of Mini-Mental State Examination for detection of mild cognitive impairment. It is brief and feasible to conduct in the clinical setting, and can be completed in less than 15 minutes. Thus, HK-MoCA provides an attractive alternative screening instrument to Mini-Mental State Examination which has ceiling effect (ie may fail to detect mild/moderate cognitive impairment in people with high education level or premorbid intelligence) and needs to be purchased due to copyright issues.
  • Publisher: China: Hong Kong Academy of Medicine
  • Language: English;Chinese
  • Identifier: ISSN: 1024-2708
    EISSN: 2226-8707
    DOI: 10.12809/hkmj144219
    PMID: 25125421
  • Source: Open Access: DOAJ Directory of Open Access Journals
    Freely Accessible Journals
    AUTh Library subscriptions: ProQuest Central
    MEDLINE
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