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Assessing Goodness-of-Fit of Generalized Logit Models Based on Case-Control Data

✍ Scribed by Biao Zhang

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 183 KB
Volume: 82
Category: Article
ISSN: 0047-259X
DOI: 10.1006/jmva.2001.2019

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✦ Synopsis

We consider testing the validity of the generalized logit model with I+1 categories based on case-control data. After reparametrization, the assumed logit model is equivalent to an (I+1)-sample semiparametric model in which the I log ratios of two unspecified density functions are linear in data. By identifying this (I+1)-sample semiparametric model, which is of intrinsic interest in general (I+1)-sample problems, with a biased sampling model, we propose a weighted Kolmogorov-Smirnov-type statistic to test the validity of the generalized logit model. We establish some asymptotic results associated with the proposed test statistic. We also propose a bootstrap procedure along with some results on simulation and on analysis of three real data sets.

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