Pentagon Drawing Test: data from Alzheimer’s disease, Paraphrenia and Obsessive compulsive disorder in elderly patients

• Autores: Juliana Francisca Cecato
• Localización: Perspectivas en Psicología, ISSN-e 1853-8800, ISSN 1668-7175, Vol. 13, Nº. 2, 2016, págs. 21-26
• Idioma: inglés
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• Resumen

  • Pentagon Drawing Test analyses visuoconstrutional skills and it is part of the MMSE screening. The aim of this paper was to analyze the predictive function of the Pentagon's drawing test in elderly patients with organic and non-organic disorders. This cross-sectional study with 64 subjects above 60 years old and with at least two years of schooling. Focus of this research, we selected the copy of the pentagon of MMSE, according to the scale recommended by Bourke et al. (1995). Bourke et al. (1995) established a scale with 6 items for evaluating the pentagonal design. Participants were divided into four groups: normal elderly who formed the control group (CG), elderly with Alzheimer's disease (AD), elderly with non-organic disorders such as obsessive compulsive disorder (OCD) and late paraphrenia. Outcome shows statistically significant differences among normal elderly (NC), AD, OCD and Paraphrenia in cognitive instruments, such as MMSE (p> 0.0001), CAMCOG (p> 0.0001), Pentagon drawing (p = 0.006) and Clock Drawing Test by Mendez scale (p> 0.0001). ROC curves’ analyses showed the greater AUC was found in the pentagon drawing for the diagnosis of AD (AUC = 0.756; p = 0.010), and sensitivity and specificity, respectively, 100% and 64%. It can be concluded, that the PDT has the confluence of information (cognitive and motor) more robust than the other simplifies instruments such as the MMSE.

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