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Life table methods for heterogeneous populations: Distributions describing the heterogeneity. (English) Zbl 0553.92013
Usually the assumption that the population is homogeneous is unrealistic. A systematic way in describing heterogeneity is to use the unobserved quantity called frailty. The death rate at age t is described by the function which depends on t and frailty z. The paper uses mainly the inverse Gaussian distribution and examines the consequences of different distributions which have been used earlier in the literature (among others gamma distribution).
Reviewer: U.Wilczyńska

92D25 Population dynamics (general)
62P10 Applications of statistics to biology and medical sciences; meta analysis
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