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Biol Res Nurs. 2004 Oct;6(2):151-7.

A comparison of the general linear mixed model and repeated measures ANOVA using a dataset with multiple missing data points.

Author information

  • 1University of Florida College of Nursing, Gainesville 32610-0187, USA. ckrueger@nursing.ufl.edu

Abstract

Longitudinal methods are the methods of choice for researchers who view their phenomena of interest as dynamic. Although statistical methods have remained largely fixed in a linear view of biology and behavior, more recent methods, such as the general linear mixed model (mixed model), can be used to analyze dynamic phenomena that are often of interest to nurses. Two strengths of the mixed model are (1) the ability to accommodate missing data points often encountered in longitudinal datasets and (2) the ability to model nonlinear, individual characteristics. The purpose of this article is to demonstrate the advantages of using the mixed model for analyzing nonlinear, longitudinal datasets with multiple missing data points by comparing the mixed model to the widely used repeated measures ANOVA using an experimental set of data. The decision-making steps in analyzing the data using both the mixed model and the repeated measures ANOVA are described.

Copyright 2004 Sage Publications

PMID:
15388912
[PubMed - indexed for MEDLINE]
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