Demographic Reproduction Rates and the Estimation of an Expected Total Count per Person in an Open Population
人口再生产率与开放人口中人均预期事件总数的估计
Demographers conventionally estimate the mean number of children ever born to a woman who reaches a given age by adding age-specific fertility rates for her cohort up to that age. If the age selected is at the end of the childbearing period, the result is the cohort's total fertility rate (TFR); if only female babies are counted, the result is the gross reproduction rate (GRR). If births were generated by an age-dependent Poisson process, cumulative fertility rates give…