Abstract
We begin by defining a time-dependent variable and providing some examples of such a variable. We also state the general formula for a Cox model that is extended to allow time dependent variables, followed by a discussion of the characteristics of this model, including a description of the hazard ratio.
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© 2012 Springer Science+Business Media, LLC
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Kleinbaum, D.G., Klein, M. (2012). Extension of the Cox Proportional Hazards Model for Time-Dependent Variables. In: Survival Analysis. Statistics for Biology and Health. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6646-9_6
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DOI: https://doi.org/10.1007/978-1-4419-6646-9_6
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Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-6645-2
Online ISBN: 978-1-4419-6646-9
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