Tempo Adjustment Bongaarts Feeney Calculator
Apply the Bongaarts-Feeney tempo adjustment, inflating the observed period total fertility rate to TFR / (1 - r) where r is the annual change in the mean age at childbearing.
Description
Apply the Bongaarts-Feeney tempo adjustment, inflating the observed period total fertility rate to TFR / (1 - r) where r is the annual change in the mean age at childbearing.
Apply the Bongaarts-Feeney tempo adjustment, inflating the observed period total fertility rate to TFR / (1 - r) where r is the annual change in the mean age at childbearing.1
When to use Tempo Adjustment Bongaarts Feeney Calculator
Use this fertility measure when the births, women at risk, parity categories, and observation period follow the definition required by the selected method.
- Observed TFR
- Observed period total fertility rate.
- Tempo r
- Annual tempo shift r: positive when the mean age at childbearing is rising.
How the method works
- Adjusted TFR
- Tempo-adjusted total fertility rate.
Limitations and assumptions
Period and cohort fertility answer different questions. Survey recall, parity truncation, changing age patterns, union definitions, and mismatched exposure populations can materially change the result.
Alternative or Complementary measures
Pair period fertility with cohort measures, parity distributions, or wanted-fertility indicators when available. These complementary views separate timing changes from completed family size and stated preferences.
References
-
Total fertility rate — Wikipedia contributors
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