GEECORR: A SAS macro for regression models of correlated binary responses and within-cluster correlation using generalized estimating equations
Periodicals(2021)
摘要
Background and objectives: Generalized estimating equations (GEE) provide population-averaged model inference for longitudinal and clustered outcomes via a generalized linear model for the effect of explanatory variables on the marginal mean, while intra-cluster correlations are ordinarily treated as nuisance parameters. Software to richly parameterize and conduct inference for complex correlation structures in the marginal modeling framework is scarce. Methods: A SAS macro, GEECORR, has been developed for the analysis of clustered binary data based on GEE to include additional estimating equations for modeling pairwise correlation between binary variates as a function of covariates. Results: We illustrate the macro in a surveillance study with repeated measures, a longitudinal study, and a study with biological clustering. Conclusions: This article provides an overview of the GEE method consisting of a pair of estimating equations, describes the features and capabilities of the GEECORR macro including regression diagnostics and finite-sample bias-corrected covariance estimators, and demonstrates the macro usage for three studies. (c) 2021 Elsevier B.V. All rights reserved.
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关键词
Clustered binary data,Deletion diagnostics,Intraclass correlation,Longitudinal data,Repeated measures
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