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Robust Inference with Binary Data

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Published in Psychometrika. 2002, vol. 67, no. 1, p. 21-32
Abstract In this paper robustness properties of the maximum likelihood estimator (MLE) and several robust estimators for the logistic regression model when the responses are binary are analysed. It is found that the MLE and the classical Rao's score test can be misleading in the presence of model misspecification which in the context of logistic regression means either misclassification's errors in the responses, or extreme data points in the design space. A general framework for robust estimation and testing is presented and a robust estimator as well as a robust testing procedure are presented. It is shown that they are less influenced by model misspecifications than their classical counterparts. They are finally applied to the analysis of binary data from a study on breastfeeding.
Keywords Logistic regressionMisclassificationRobust statisticsMestimatorsRao's score testInfluence functionBreastfeeding
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VICTORIA-FESER, Maria-Pia. Robust Inference with Binary Data. In: Psychometrika, 2002, vol. 67, n° 1, p. 21-32. https://archive-ouverte.unige.ch/unige:6456

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Deposited on : 2010-05-04

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