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Analysis of longitudinal multiple-source binary data using generalized estimating equations

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We present a multivariate logistic regression model for the joint analysis of longitudinal multiple-source binary data. Longitudinal multiple-source binary data arise when repeated binary measurements are obtained from two or more sources, with each source providing a measure of the same underlying variable. Since the number of responses on each subject is relatively large, the empirical variance estimator performs poorly and cannot be relied on in this setting. Two methods for obtaining a parsimonious within-subject association structure are considered. An additional complication arises with estimation, since maximum likelihood estimation may not be feasible without making unrealistically strong assumptions about third- and higher order moments. To circumvent this, we propose the use of a generalized estimating equations approach. Finally, we present an analysis of multiple-informant data obtained longitudinally from a psychiatric interventional trial that motivated the model developed in the paper.
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Keywords: Kronecker product; Logistic regression; Multiple informants; Odds ratio; Psychiatry; Repeated measures

Document Type: Research Article

Affiliations: 1: Colby College, Waterville, and Harvard School of Public Health, Boston, USA. 2: Harvard School of Public Health, Boston, USA.

Publication date: 2004-01-01

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