Performance of the Pentagon Drawing test for the screening of older adults with Alzheimer's dementia

ABSTRACT The Pentagon Drawing Test (PDT) is a common cognitive screening test. Objective: The aim of this study was to evaluate performance properties of a specific PDT scoring scale in older adults with Alzheimer's disease (AD) and healthy controls. Methods: A cross-sectional study of 390 elderly patients, aged 60 years or older with at least two years of education was conducted. All participants completed clinical and neuropsychological evaluations, including the Cambridge Cognitive Examination, the Mini-Mental State Examination (MMSE), and the Clock Drawing Test. All PDT were blindly scored with the scale of Bourke et al. Results: PDT analyses of the binary score on the MMSE (0 or 1 point) did not discriminate AD from controls (p = 0.839). However, when PDT was analyzed using the Bourke et al. scale, the two groups could be distinguished (p

摘要
画五边形测验（Pentagon Drawing Test, PDT）是一类常用的认知筛查工具。
目的：本研究旨在评估特定PDT评分量表在阿尔茨海默病（Alzheimer's disease, AD）老年患者与健康对照人群中的测量性能。
方法：本研究采用横断面研究设计，纳入390名年龄≥60岁且受教育年限至少2年的老年受试者。所有参与者均完成临床与神经心理学评估，涵盖剑桥认知检查（Cambridge Cognitive Examination）、简易精神状态检查表（Mini-Mental State Examination, MMSE）以及画钟测验（Clock Drawing Test）。所有画五边形测验答卷均采用伯克等人（Bourke et al.）开发的评分量表进行盲法评分。
结果：针对简易精神状态检查表的二元评分（0分或1分）开展的画五边形测验分析，未能有效区分阿尔茨海默病患者与对照人群（p=0.839）。然而，当采用伯克等人的评分量表对画五边形测验结果进行分析时，两组人群可被有效区分（p