The total fertility rate (TFR), sometimes also called the fertility rate, 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
- she were to experience the exact current age-specific fertility rates (ASFRs) through her lifetime, and
- she were to survive from birth through the end of her reproductive life.
It is obtained by summing the single-year age-specific rates at a given time.
Read more about Total Fertility Rate: Parameter Characteristics, Population-lag Effect, Developed or Developing Countries, United States, World Extremes, Europe, Factors
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