<P> The total fertility rate (TFR), sometimes also called the fertility rate, absolute / potential natality, period total fertility rate (PTFR) or total period fertility rate (TPFR) of a population is the average number of children that would be born to a woman over her lifetime if: </P> <Ol> <Li> She were to experience the exact current age - specific fertility rates (ASFRs) through her lifetime, and </Li> <Li> She were to survive from birth through the end of her reproductive life . </Li> </Ol>

The total fertility rate (tfr) is an estimate of