Modelling age‐dependent force of infection from prevalence data using fractional polynomials
- 26 October 2005
- journal article
- research article
- Published by Wiley in Statistics in Medicine
- Vol. 25 (9) , 1577-1591
- https://doi.org/10.1002/sim.2291
Abstract
The force of infection is one of the primary epidemiological parameters of infectious diseases. For many infectious diseases it is assumed that the force of infection is age-dependent. Although the force of infection can be estimated directly from a follow up study, it is much more common to have cross-sectional seroprevalence data from which the prevalence and the force of infection can be estimated. In this paper, we propose to model the force of infection within the framework of fractional polynomials. We discuss several parametric examples from the literature and show that all of these examples can be expressed as special cases of fractional polynomial models. We illustrate the method on five seroprevalence samples, two of Hepatitis A, and one of Rubella, Mumps and Varicella. Copyright © 2005 John Wiley & Sons, Ltd.Keywords
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