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ISSN 2225-4676 (Electronic)

2020, Number 2

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Rev Cubana Neurol Neurocir 2020; 10 (2)

To preliminarily validate the Montreal Cognitive Assessment MoCA test in older adults

Rodríguez LG, Tamargo BT, Castro JM, Rodríguez MY, Goenaga MJ

Language: Spanish
References: 17
Page: 1-18
PDF size: 293.58 Kb.


ABSTRACT

Objective: To preliminarily validate the Montreal Cognitive Assessment test in older adults.
Methods: A developmental investigation was carried out with an intentional, non-probabilistic sample, guided by inclusion-exclusion criteria. The MoCA test was administered to a total of 133 subjects, over 55 years of age, with more than six years of schooling, 3 groups were formed: 1 Mild cognitive impairment: 51 subjects, 2 Dementia: 43 subjects, 3 healthy: 39 subjects. For the statistical analysis, mean summary and standard deviation measures were used. The comparison of means between the groups was carried out by means of the analysis of one-way variance (ANOVA). An ROC curve was used to calculate the cut-off points.
Results: The mean MoCA scores were 22.6 for the group with cognitive impairment, 15.4 for the group with dementia, and the controls exceeded 25 points. Cut off points were obtained: less than 24.5 to differentiate cognitive deterioration from healthy subjects, sensitivity 74.5% and specificity 71.8%. Scores below 18.5 supported the diagnosis of dementia with a sensitivity of 72.1% and specificity of 97.4%.
Conclusions: The MoCA in older adults studied sample is a reliable instrument for discrimination between dementia and healthy subjects, as well as for the correct identification of subjects with mild cognitive impairment with adequate levels of specificity and sensitivity.


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