Net reproduction rate

This article describes an attempt to use behavior of multiple birth cohorts in a single period and extrapolate from that to consider the outcomes for a hypothetical individual, who, at each age, behaves like the birth cohort for that age.

Definition

The net reproduction rate (NRR) of a population based on measurements in a given year is defined as follows. It is the total number of daughters a female would have if she went through her childbearing years conforming to the age-specific fertility rate of that year, the mortality rate (i.e., the probability of survival till that year) and assuming that she conforms to the sex ratio at birth for the population.