SINET: Ethiopian Journal of Science

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A comparative study of models for correlated binary data with applications to health services research

Gemechis Dilba, Marc Aerts


Various methods of modeling correlated binary data are compared as applied to data from health services research. The methods include the standard logistic regression, a simple adjustment of the standard errors of logistic regression by a single inflator, the weighted logistic regression, the generalized estimating equation, the beta-binomial model, and two proposed bootstrap methods. First, these approaches are compared for a fixed set of predictors by individual tests of significance. Next, several subsets of predictors are compared through the AIC criterion, whenever applicable.

Key words/phrases: Beta-binomial, bootstrap, correlated binary data, model selection, overdispersion

SINET: Ethiopian Journal of Science Vol. 27 (2) 2004: 97–104

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