Conflicting definitions of confounding and their ramifications for veterinary epidemiologic research: Collapsibility vs comparability

Philip H. Kass From the Department of Epidemiology, School of Public Health, University of California, Los Angeles, CA 90024-1772.

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 DVM, PhD
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Sander Greenland From the Department of Epidemiology, School of Public Health, University of California, Los Angeles, CA 90024-1772.

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