Correa J A, Perrault A, Wolfson C
Department of Mathematics and Statistics, McGill University, Montreal, Quebec.
Int Psychogeriatr. 2001;13 Supp 1:71-8. doi: 10.1017/s1041610202008001.
We examined the degree of interrater agreement on the Modified Mini-Mental State Examination (3MS), administered both in the home and at the clinical examination, to determine the boundaries of reliable individual changes for 257 community-dwelling older persons who received a diagnosis of dementia at CSHA-1. Individual score differences were approximately normally distributed (mean of differences 0.2; SD 8.0; 95% confidence interval -16 to 16). The intraclass correlation coefficient was 0.85. Except for the language of testing, there was no relationship between score differences and the determinants investigated (i.e., age, education, type and severity of dementia). This study provides evidence that, in a time frame compatible with no change in cognition, the discrepancy between repeat 3MS scores can be as large as +/- 16. These limits represent the range of variability consistent with no change and should be considered when interpreting individual change scores.
我们对居家和临床检查中实施的改良简易精神状态检查表（3MS）的评分者间一致性程度进行了研究，以确定在CSHA-1中被诊断为痴呆的257名社区居住老年人可靠个体变化的界限。个体得分差异近似呈正态分布（差异均值为0.2；标准差为8.0；95%置信区间为-16至16）。组内相关系数为0.85。除测试语言外，得分差异与所研究的决定因素（即年龄、教育程度、痴呆类型和严重程度）之间没有关系。本研究提供的证据表明，在与认知无变化相符的时间范围内，重复3MS评分之间的差异可能高达±16。这些界限代表了与无变化相符的变异范围，在解释个体变化分数时应予以考虑。
