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Methods and Applications of Longitudinal Data Analysis by Xian Liu

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Chapter 2

Traditional methods of longitudinal data analysis

Abstract

In Chapter 2, I review a number of classical methods traditionally applied in longitudinal data analysis. First, several descriptive approaches are delineated, including time plots of trend, the paired t-tests, and effect sizes and their confidence intervals. Meta-analysis is also described, with the remaining issues in this technique being discussed. An illustration is provided for displaying how to apply those descriptive methods empirically. It is emphasized that due to the existence of lurking variables, the descriptive approaches cannot be used to generate final conclusions on an event of interest. Next, the basic specification of analysis of variance (ANOVA), assuming independence ...

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