Terms used in official statistics

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Total fertility rate


Means the number of children that would be born on average by a woman during her whole reproductive period (15–49 years), assuming that in particular phases of this period she would give birth to children with the intensity observed in a given year, i.e. the age-specific fertility rates are treated as constant.

Total fertility rate is calculated based on sum of the age-specific fertility rates.

High-level terms

Contact person on methodology:
GUS – Departament Badań Demograficznych
Amendments to the description of a concept: