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Biometrika 1995 82(1):101-111; doi:10.1093/biomet/82.1.101
© 1995 by Biometrika Trust
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The empirical content of canonical models of infectious diseases: The proportional hazard specification

PIERRE-YVES GEOFFARD1 and TOMAS PHILIPSON2

1Delta 48 boulevard Jourdan, 75014, Paris, France
2Department of Economics, University of Chicago 1126 East 59th Street, Chicago, Illinois 60637, U. S.A

This paper discusses the falsifiable implications of the heterogeneous mixing model of infectious disease. It is shown that the model implies a proportional hazard restriction across the set of susceptible survival functions of the subpopulations. Using this implication, the testable restrictions and identification of the model are discussed when subpopulations are observable as well as unobservable.

Key Words: Heterogeneous mixing model • Infectious disease • Proportional hazard model • Survival analysis


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