CAMCOG - valores das subescalas em idosos normais com níveis diferentes de escolaridade. Aspectos preliminares / CAMCOG – Subscales values in normal elderly with different educational levels – Preliminary aspects

Introdução: O Exame Cognitivo Cambridge (CAMCOG) é um instrumento breve para avaliação cognitiva. É composto por subescalas que representam diversos domínios cognitivos (orientação, linguagem, memória, atenção, praxia, percepção, cálculo e pensamento abstrato). Escores totais adequados permitem definir comprometimento em nível de demência. Entretanto, tais escores totais nem sempre representam o desempenho real de um indivíduo, pois é possível obter escores baixos em determinado(s) domínio(s) e ainda manter um escore total dentro da variação normal. Objetivo: Obter valores do CAMCOG total e das subescalas de indivíduos idosos normais com diferentes níveis de escolaridade. O interesse crescente na definição de estágios pré-demência é uma razão importante do presente estudo. Métodos: Foram avaliados com CAMCOG idosos normais residindo na comunidade, divididos em três grupos de acordo com o nível de escolaridade. Foi realizada análise estatística para comparar a significância dos escores (total e subescalas) entre os grupos. Resultados: Os valores médios do CAMCOG total mostraram aumento com a escolaridade, o mesmo tendo sido observado em relação aos escores das subescalas. Conclusão: As subescalas do CAMCOG relacionados com os níveis de escolaridade são necessárias para identificar indivíduos que apresentam diminuição de valores em um ou mais domínios cognitivos, apesar de apresentar o escore total dentro da variação da normalidade, o que pode caracterizar um estado de comprometimento cognitivo pré-demência...

Introduction: The Cambridge Cognitive Examination (CAMCOG) is a brief tool for cognitive assessment. It is composed of subscales that represent various cognitivedomains (orientation, language, memory, attention, praxis, perception, calculation and abstract thinking). Appropriate total scores permit to define impairment in the dementia level. However, such total scores do not always represent the real performance of the subject as it is possible to obtain low scores in certain domain(s) yet maintaining a total score in the normal range. Objective: To obtain data of CAMCOG total and subscales scores of normal elderly subjects with different educational levels. The growing interest in defining pre-dementia stages is an important reason of the present study. Methods: Community living normal elderly, divided in three groups according to their education level were assessed with CAMCOG. Statistic analysis was performed to compare significance of the scores (total and subscales) among the groups. Results: Total CAMCOG mean values increased with education, and the same was observed in relation to the subscales scores. Conclusion: CAMCOG subscales related to education levels are necessary to identify subjects who present decreased values on one or more cognitive domain despite total scores within normal range, which may characterize a pre-dementia cognitive impairment state...

Impaired abstract thinking may discriminate between normal aging and vascular mild cognitive impairment / O pensamento abstrato comprometido pode diferenciar o envelhecimento normal do comprometimento cognitivo leve vascular

OBJECTIVE: Cerebrovascular disease (CVD) is associated with cognitive deficits. This cross-sectional study examines differences among healthy elderly controls and patients with vascular mild cognitive impairment (VaMCI) and vascular dementia (VaD) in performances on CAMCOG subscales. METHOD: Elderly individuals (n=61) were divided into 3 groups, according to cognitive and neuroimaging status: 16 controls, 20 VaMCI and 25 VaD. VaMCI and VaD individuals scored over 4 points on the Hachinski Ischemic Scale. RESULTS: Significant differences in total CAMCOG scores were observed across the three groups (p<0.001). VaD subjects performed worse than those with VaMCI in most CAMCOG subscales (p<0.001). All subscales showed differences between controls and VaD (p<0.001). Performance on abstract thinking showed difference between VaMCI and controls (p<0.001). CONCLUSION: CAMCOG discriminated controls from VaMCI and VaD. Assessment of abstract thinking may be useful as a screening item for diagnosis of VaMCI.

OBJETIVO: A doença cerebrovascular (DCV) associa-se a déficits cognitivos. Este estudo transversal objetiva examinar diferenças entre controles saudáveis idosos e pacientes com comprometimento cognitivo leve vascular (CCLV) e demência vascular (DV) nas subescalas do CAMCOG. MÉTODO: Indivíduos idosos (n=61) foram divididos em 3 grupos, de acordo com o perfil cognitivo e com a neuroimagem: 16 controles, 20 CCLV e 25 DV. Pacientes com CCLV e DV pontuaram acima de 4 pontos no Escore Isquêmico de Hachinski. RESULTADOS: Diferenças significativas foram observadas entre os três grupos no resultado final do CAMCOG. Pacientes com DV obtiveram escores inferiores àqueles dos indivíduos com CCLV em quase todas as subescalas. Todas as subescalas mostraram diferenças entre DV e controles. O desempenho no item pensamento abstrato mostrou diferenças entre CCLV e controles. CONCLUSÃO: O CAMCOG diferenciou controles de pacientes com CCLV e DV. A avaliação do pensamento abstrato pode ser útil para discriminar CCLV de controles.

Validation of the Korean Version of Cambridge Cognitive Examination-Revised(CAMCOG-R) to Assist Dementia Diagnosis

BACKGROUND: The present study aims to examine the reliability and validity of a Korean version of the CAMCOG-R(CAMCOG-RK) in a clinical setting and an institution, that have been widely used to detect early dementia. METHODS: Study participants included 243 dementia sufferers, 68 mild cognitive impairment(MCI) suffers and 354 non-demented subjects. DSM-IV clinical criteria for dementia and Petersen's criteria for MCI were used as the 'gold' standards. The CAMCOG-R was translated into Korean and then back to English. Six items needed modifications for local usage. RESULTS: Interrater and test-retest scores calculated as intraclass correlation coefficients showed excel- lent for total score and all subscale scores of CAMCOG-RK. A strong concurrent validity was found with the MMSE-K score(r=0.82, p<0.01). Examination of the association between CAMCOG-R scores and socio- demographic variables(age, sex, and education) shows that age and education exerts a significant, and independent, effect upon performance. The eight age and education-specific cutoff point for dementia and MCI provided excellent sensitivity and specificity mostly more than 90%. CONCLUSION: The CAMCOG-RK was found to be an appropriate instrument to discriminate between demented and non-demented individuals and between individuals with MCI and without MCI in a clinical setting. Further studies should examine the psychometric characteristics of the CAMCOG-RK in a more varied sample.