Transcription of Repeated Measures Analysis with Discrete Data Using the ...
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Repeated Measures Analysis with Discrete data Using theSAS SystemGordon JohnstonMaura StokesSAS Institute Inc., Cary, NCAbstractThe Analysis of correlated data arising from repeatedmeasurements when the measurements are assumedto be multivariate normal has been studied exten-sively. In many practical problems, however, thenormality assumption is not reasonable. When theresponses are Discrete and correlated, for example,different methodology must be used in the Analysis ofthe data . Generalized Estimating Equations (GEEs)provide a practical method with reasonable statisticalefficiency to analyze such data . This paper providesan overview of the use of GEEs in the Analysis ofcorrelated data Using the SAS System. Emphasis isplaced on Discrete correlated data , since this is anarea of great practical were introduced by Liang and Zeger (1986) asa method of dealing with correlated data when, exceptfor the correlation among responses, the data can bemodeled as a generalized linear model.
between the visits. Accounting for this correlation is an important aspect of the analysis strategy. The seizures data will be analyzed in later sections as
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Lecture 8: Serial Correlation, Columbia University, Analysis, Correlation, Regression, Multilevel Logistic Regression Analysis Applied, Regression analysis, Relative Weights Analysis, CORRELATION AND REGRESSION, CORRELATION AND REGRESSION Correlation and regression, Regression analysis with cross-sectional, The Basic Two-Level Regression Model, Multilevel Analysis, Princeton University, Multilevel