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Advisor(s)
Abstract(s)
O rastreio cognitivo por meio de instrumentos de avaliação de rápida aplicação é uma mais valia na deteção precoce de défices cognitivos. O Montreal Cognitive Assessment (MoCA) é um instrumento breve que abrange várias funções cognitivas e que se tem mostrado sensível aos estádios de declínio mais ligeiros. Objetivos: Traduzir e adaptar o MoCA para a população cabo-verdiana; analisar as qualidades psicométricas e validade clinica da versão adaptada (MoCA-CV). Metodologia: Concluída a fase de adaptação transcultural, o MoCA-CV foi administrado a uma amostra de 147 indivíduos adultos, sendo 117 saudáveis (idade=66,1 ± 8,18; escolaridade=5,4 ± 4,00) e 30 com défice cognitivo associado a diferentes quadros neuropsicológicos (idade=77,4 ± 8,01; escolaridade=2,7 ± 2,73). Para além do MoCA, o protocolo aplicado incluía ainda uma anamnese, o Mini-Mental State Examination (MMSE), o Geriatric Depression Scale (GDS-15) e o Clinical Dementia Rating Scale (CDR). Foi realizado um reteste com 14 sujeitos após um intervalo de tempo de cerca de 30 dias. Resultados: O MoCA- CV revelou indicadores de fiabilidade adequados relativamente à sua pontuação total (consistência interna, α=,784; estabilidade temporal, r =.884). Verificaram-se também bons indicadores de validade, nomeadamente a correlação concorrente com outras medidas utilizadas e uma discriminação robusta entre amostra saudável e a amostra clínica (média para o grupo saudável: M ± DP = 24,02 ± 3,828 e média para o grupo clinico: M ± DP =12.67 ± 3.880). As variáveis sociodemográficas mais associadas ao desempenho na prova foram a idade e a escolaridade, tendo-se apresentado os valores médios por faixa etária e nível de escolaridade. Considerando o grupo clínico e uma amostra saudável emparelhada nas variáveis sociodemográficas relevantes, encontrou-se um ponto de corte que ronda os 18 pontos, a que está associada uma sensibilidade de 90%. Conclusão: O MoCA-CV revelou boas qualidades psicométricas e o seu uso pode ser promissor no contexto clinico cabo-verdiano.
The cognitive screening through the implementation of quick assessment tools is an asset in the early detection of cognitive deficits. The Montreal Cognitive Assessment (MoCA) is a brief instrument that encompasses several cognitive functions and that has proven sensitive to the slightest decline stadiums. Objectives: To translate and adapt the MoCA to the Cape Verdean population; analyze the psychometric properties and clinical validity of the adapted version (MoCA-CV). Methodology: After the phase of cross-cultural adaptation, the MoCA-CV was administered to a sample of 147 adult subjects, 117 of them healthy (age = 66.1 ± 8.18; education = 5.4 ± 4.00) and 30 of them with cognitive impairment associated with different neuropsychological clinical conditions (age = 77.4 ± 8.01; education = 2.7 ± 2.73). In addition to the MoCA, the applied protocol also included an anamnesis, the Mini-Mental State Examination (MMSE), the Geriatric Depression Scale (GDS-15) and the Clinical Dementia Rating Scale (CDR). Retest was carried out with 14 subjects after a period of about 30 days. Results: MoCA- CV revealed adequate reliability indicators regarding its total score (internal consistency, α =, 784; temporal stability, r = .884). There were also good indicators of validity, as the concurrent correlation with other measures used and a robust discrimination between the healthy sample and the clinical sample (average for healthy group: M ± SD = 24.02 ± 3,828 and average for the clinical group: M ± SD = 12.67 ± 3.880). The sociodemographic variables most associated with the performance on the test were age and education. Average values for age and education level have been presented. Considering the clinical group and a healthy sample paired to the relevant sociodemographic variables, a cutoff point of around 18 points was found, to which is associated a sensitivity of 90%. Conclusion: The MoCA-CV showed good psychometric qualities and its use may be promising in the Cape Verdean clinical context.
The cognitive screening through the implementation of quick assessment tools is an asset in the early detection of cognitive deficits. The Montreal Cognitive Assessment (MoCA) is a brief instrument that encompasses several cognitive functions and that has proven sensitive to the slightest decline stadiums. Objectives: To translate and adapt the MoCA to the Cape Verdean population; analyze the psychometric properties and clinical validity of the adapted version (MoCA-CV). Methodology: After the phase of cross-cultural adaptation, the MoCA-CV was administered to a sample of 147 adult subjects, 117 of them healthy (age = 66.1 ± 8.18; education = 5.4 ± 4.00) and 30 of them with cognitive impairment associated with different neuropsychological clinical conditions (age = 77.4 ± 8.01; education = 2.7 ± 2.73). In addition to the MoCA, the applied protocol also included an anamnesis, the Mini-Mental State Examination (MMSE), the Geriatric Depression Scale (GDS-15) and the Clinical Dementia Rating Scale (CDR). Retest was carried out with 14 subjects after a period of about 30 days. Results: MoCA- CV revealed adequate reliability indicators regarding its total score (internal consistency, α =, 784; temporal stability, r = .884). There were also good indicators of validity, as the concurrent correlation with other measures used and a robust discrimination between the healthy sample and the clinical sample (average for healthy group: M ± SD = 24.02 ± 3,828 and average for the clinical group: M ± SD = 12.67 ± 3.880). The sociodemographic variables most associated with the performance on the test were age and education. Average values for age and education level have been presented. Considering the clinical group and a healthy sample paired to the relevant sociodemographic variables, a cutoff point of around 18 points was found, to which is associated a sensitivity of 90%. Conclusion: The MoCA-CV showed good psychometric qualities and its use may be promising in the Cape Verdean clinical context.
Description
Dissertação de Mestrado, Neurociências Cognitivas e Neuropsicologia, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2016
Keywords
Montreal Cognitive Assessment Rastreio cognitivo Défices cognitivo Cognitive screening Cognitive deficits