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首页> 外文期刊>BMC Psychiatry >The Beijing version of the montreal cognitive assessment as a brief screening tool for mild cognitive impairment: a community-based study
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The Beijing version of the montreal cognitive assessment as a brief screening tool for mild cognitive impairment: a community-based study

机译：蒙特利尔认知评估的北京版，作为轻度认知障碍的简短筛查工具：一项基于社区的研究

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Background A cross-sectional validation study was conducted in several urban and rural communities in Beijing, China, to evaluate the effectiveness of the Beijing version of the Montreal Cognitive Assessment (MoCA-BJ) as a screening tool to detect mild cognitive impairment (MCI) among Chinese older adults. Methods The MoCA-BJ and the Mini-Mental State Examination (MMSE) were administered to 1001 Chinese elderly community dwellers recruited from three different regions (i.e., newly developed, old down-town, and rural areas) in Beijing. Twenty-one of these participants were diagnosed by experienced psychiatrists as having dementia, 115 participants were diagnosed as MCI, and 865 participants were considered to be cognitively normal. To analyze the effectiveness of the MoCA-BJ, we examined its psychometric properties, conducted item analyses, evaluated the sensitivity and specificity of the scale, and compared the scale with the MMSE. Demographic and regional differences among our subjects were also taken into consideration. Results Under the recommended cut-off score of 26, the MoCA-BJ demonstrated an excellent sensitivity of 90.4%, and a fair specificity (31.3%). The MoCA-BJ showed optimal sensitivity (68.7%) and specificity (63.9%) when the cut-off score was lowered to 22. Among all the seven cognitive sub-domains, delayed recall was shown to be the best index to differentiate MCI from the normal controls. Regional differences disappeared when the confounding demographic variables (i.e., age and education) were controlled. Item analysis showed that the internal consistency was relatively low in both naming and sentence repetition tasks, and the diagnostic accuracy was similar between the MoCA-BJ and the MMSE. Conclusions In general, the MoCA-BJ is an acceptable tool for MCI screening in both urban and rural regions of Beijing. However, presumably due to the linguistic and cultural differences between the original English version and the Chinese version of the scale, and the lower education level of Chinese older adults, the MoCA-BJ is not much better than the MMSE in detecting MCI, at least for this study sample. Further modifications to several test items of the MoCA-BJ are recommended in order to improve the applicability and effectiveness of the MoCA-BJ in MCI screening among the Chinese population.
机译：背景技术在中国北京的多个城乡社区中进行了横断面验证研究，以评估北京版《蒙特利尔认知评估》（MoCA-BJ）作为检测轻度认知障碍（MCI）的筛查工具的有效性。在中国老年人中。方法对从三个不同地区（即新兴，旧城区和农村地区）招募的1001名中国老年人社区居民进行MoCA-BJ和最低精神状态检查（MMSE）。这些参与者中有21名被经验丰富的精神科医生诊断为患有痴呆症，115名参与者被诊断为MCI，并且865名参与者被认为是认知正常的。为了分析MoCA-BJ的有效性，我们检查了其心理测量特性，进行了项目分析，评估了量表的敏感性和特异性，并将该量表与MMSE进行了比较。还考虑了我们受试者之间的人口和地区差异。结果MoCA-BJ在建议的26分截止评分下显示出极好的敏感性，为90.4％，特异性为31.3％。当临界值降低到22时，MoCA-BJ表现出最佳的敏感性（68.7％）和特异性（63.9％），在所有七个认知子域中，延迟召回被证明是区分MCI与正常的控制。控制混杂的人口统计学变量（即年龄和教育程度）后，区域差异消失了。项目分析表明，在命名和句子重复任务中，内部一致性相对较低，并且MoCA-BJ和MMSE的诊断准确性相似。结论总体而言，MoCA-BJ是北京城乡地区MCI筛查的可接受工具。但是，大概是由于原始英语版本和中文版本之间的语言和文化差异，以及中国老年人的文化程度较低，所以MoCA-BJ至少在检测MCI方面不比MMSE好。对于本研究样本。为了提高MoCA-BJ在中国人群中进行MCI筛查的适用性和有效性，建议进一步修改MoCA-BJ的几个测试项目。

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