APPROXIMATION OF SURVIVAL FUNCTION FOR HETEROGENEOUS POPULATIONS
Journal Title: Scientific Journal of the Military University of Land Forces - Year 2011, Vol 162, Issue 4
Abstract
For a long time demographers and actuaries have been deliberating the issue of the laws of life. A number of proposed survival functions turned out to be unsatisfactory when they were applied empirically. One of the ways to overcome the difficulties is to modify the general survival functions by introducing an additional formula characterizing the frailty of individuals. Another way is to use a mixture of appropriate distributions. In this contribution the latter approach to determine the survival time of men in the Polish population in 2009 is applied.
Authors and Affiliations
Stanisława OSTASIEWICZ
Keywords
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