School of Public Health, University of Saskatchewan , Saskatoon, SK, Canada.
Front Psychol. 2010 Sep 9;1:146. doi: 10.3389/fpsyg.2010.00146. eCollection 2010.
Discriminant analysis (DA) encompasses procedures for classifying observations into groups (i.e., predictive discriminative analysis) and describing the relative importance of variables for distinguishing amongst groups (i.e., descriptive discriminative analysis). In recent years, a number of developments have occurred in DA procedures for the analysis of data from repeated measures designs. Specifically, DA procedures have been developed for repeated measures data characterized by missing observations and/or unbalanced measurement occasions, as well as high-dimensional data in which measurements are collected repeatedly on two or more variables. This paper reviews the literature on DA procedures for univariate and multivariate repeated measures data, focusing on covariance pattern and linear mixed-effects models. A numeric example illustrates their implementation using SAS software.
判别分析(DA)包括将观测值分类为组的程序(即预测判别分析),以及描述变量对区分组之间的相对重要性的程序(即描述性判别分析)。近年来,在分析重复测量设计数据的 DA 程序方面取得了一些进展。具体而言,已经为具有缺失观测值和/或不平衡测量时间的重复测量数据以及在两个或更多变量上重复收集测量值的高维数据开发了 DA 程序。本文综述了单变量和多变量重复测量数据的 DA 程序的文献,重点是协方差模式和线性混合效应模型。一个数值示例说明了使用 SAS 软件实现它们的过程。