Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
Center for Economic and Social Research, University of Southern California, Los Angeles, California.
J Am Geriatr Soc. 2020 Aug;68 Suppl 3(Suppl 3):S11-S19. doi: 10.1111/jgs.16738.
To test whether a relatively complex model of human cognitive abilities based on Cattell-Horn-Carroll (CHC) theory, developed mainly in English-speaking samples, adequately describes correlations among tests in the Longitudinal Aging Study in India-Diagnostic Assessment of Dementia (LASI-DAD), and to develop accurate measures of cognition for older individuals in India.
LASI-DAD participants were recruited from participants aged 60 years and older from 14 states in the core LASI survey, with a stratified sampling design.
Participants were interviewed at home or in a participating hospital, according to their preferences.
Community-residing older adults aged 60 years and older (N = 3,224).
A variety of cognitive tests were administered during two pretests and chosen for their appropriateness for measuring cognition in older adults in India and suitability for calibration with the core LASI survey and the Harmonized Cognitive Assessment Protocol.
We evaluated the factor structure of the test battery and its conformity with a classical CHC factor model that incorporated measurement models for general cognition, five broad domains (orientation, executive functioning, language/fluency, memory, and visuospatial), and five narrow domains (reasoning, attention/speed, immediate memory, delayed memory, and recognition memory) of cognitive performance. Model fit was adequate (root mean square error of approximation = 0.051; comparative fit index = 0.916; standardized root mean squared residual = 0.060).
We demonstrated configural factorial invariance of a cognitive battery in the Indian LASI-DAD using CHC theory. Broad domain factors may be used in future research to rank individuals with respect to cognitive performance and classify cognitive impairment. J Am Geriatr Soc 68:S11-S19, 2020.
检验基于卡特尔-霍恩-卡罗尔（CHC）理论的相对复杂的人类认知能力模型是否能充分描述印度纵向老龄化研究-痴呆诊断评估（LASI-DAD）中各项测试之间的相关性，并为印度的老年个体开发准确的认知测量方法。
LASI-DAD 参与者是从 LASI 核心调查中 14 个州年龄在 60 岁及以上的参与者中招募的，采用分层抽样设计。
参与者根据自己的意愿在家中或参与的医院接受访谈。
居住在社区的年龄在 60 岁及以上的老年人（N=3224）。
在两次预测试中进行了各种认知测试，这些测试是根据其在印度测量老年人认知能力的适宜性以及与 LASI 核心调查和协调认知评估方案的校准适用性而选择的。
我们评估了测试组合的因子结构及其与包含一般认知、五个广泛领域（定向、执行功能、语言/流畅性、记忆和视空间）以及认知表现的五个狭窄领域（推理、注意力/速度、即时记忆、延迟记忆和识别记忆）的经典 CHC 因子模型的一致性。模型拟合度良好（近似均方根误差=0.051；比较拟合指数=0.916；标准化均方根残差=0.060）。
我们使用 CHC 理论证明了印度 LASI-DAD 中认知测试组合的结构不变性。在未来的研究中，可以使用广泛的领域因素来对个体的认知表现进行排名，并对认知障碍进行分类。美国老年医学会杂志 68：S11-S19，2020。
