Qualitative analysis and identification of pattern of errors in Clock Drawing Tests of community-dwelling older adults
Análise qualitativa e identificação de padrões de erros no Teste do Desenho do Relógio em idosos da comunidade
Dement. neuropsychol; 12 (2), 2018
Publication year: 2018
Abstract The Clock Drawing Test (CDT) is a frequently employed screening tool with different scoring systems. Quantitative and semi-quantitative scoring systems, such as Sunderland's et al. (1989), do not discriminate different error patterns. Thus, the same score can represent a number of different neuropsychological profiles. Therefore, the use of a scoring method that emphasizes qualitative aspects to determine specific error patterns is fundamental.
Objective:
To use a qualitative scale to analyze error patterns in the CDTs of older adults who scored 5 in a previous study.Methods:
49 CDTs with score of 5 were analyzed using the qualitative scale. Linear regression and hierarchical and non-hierarchical cluster analyses were performed.Results:
The linear regression showed a significant association between the total score and all the error patterns of the qualitative scale. The hierarchical cluster yielded three groups. However, due to the heterogeneity observed among the groups, a non-hierarchical cluster analysis was performed to better understand the results. Three groups were determined with different neuropsychological profiles and patterns of errors.Conclusion:
The qualitative scoring of the CDT is important when examining and analyzing specific neuropsychological domains in older adults, especially executive functions.
Resumo O Teste do Desenho do Relógio (TDR) está entre os instrumentos de rastreio mais utilizados e apresenta diversos métodos de correção e pontuação. Sistemas de pontuação quantitativos e semiquantitativos não discriminam diferentes padrões de erros, como é o caso do método de Sunderland et al. (1989). Dessa feita, uma mesma pontuação pode reunir diferentes perfis neuropsicológicos. Assim, o uso de métodos de correção com ênfase nos aspectos qualitativos, para verificar padrões mais específicos de erro, tornou-se fundamental.