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Entropy of the Gompertz-Makeham mortality model
Gompertz-Makeham mortality life table entropy
2014/11/26
Background: Life table entropy is a quantity frequently used in demography; e.g., as a measure of heterogeneity in age at death, or as the elasticity of life expectancy with regards to proportional ch...
Gamma-Gompertz life expectancy at birth
approximations gamma-Gompertz frailty model hypergeometric function life expectancy at birth
2014/11/24
Background: The gamma-Gompertz multiplicative frailty model is the most common parametric model applied to human mortality data at adult and old ages. The resulting life expectancy has been calculated...
高龄老年人(65岁以上)的死亡率历来都被认为满足 Gompertz 模型，实证中有不少高龄资料以此假设来配适，但因受限于资料量的不足，鲜少有研究以统计检定的观点检视Gompertz 模型是否合适，因而至今仍有正反两派意见支持与反对将老年人死亡率以Gompertz 模型来配适或推估。有鉴于此，本研究提出一套检测 Gompertz 假设的方法，包括模型的检定、参数的估计、及藉由计算机仿真(拔靴法)得到...