In
population ecology and
demography, the net reproduction rate, ''R''
0, is the average number of offspring (often specifically daughters) that would be born to a female if she passed through her lifetime conforming to the age-specific fertility and mortality rates of a given year. This rate is similar to the
gross reproduction rate but takes into account that some females will die before completing their childbearing years. An ''R''
0 of one means that each generation of mothers is having exactly enough daughters to replace themselves in the population. If the R
0 is less than one, the reproductive performance of the population is below replacement level.
The ''R''
0 is particularly relevant where sex ratios at birth are significantly affected by the use of reproductive technologies, or where life expectancy is low.
The current (2015–20) estimate for the R
0 worldwide under the UN's medium variant model is 1.09 daughters per woman.
See also
*
List of countries by net reproduction rate
The following list sorts countries and dependent territories by their net reproduction rate. The net reproduction rate (R0) is the number of surviving daughters per woman and an important indicator of the population's reproductive rate. If R0 is ...
*
Sub-replacement fertility
*
Total fertility rate
References
External links
Net reproduction rate (daughters per woman) UNdata.
Human geography
Fertility
Demographic economics
Rates
Population ecology
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