Replacement Fertility With Mortality Checker
Compute the replacement total fertility rate as the reciprocal of the product of the female birth share and female survival to the reproductive ages, then classify an observed TFR against it within a stated tolerance.
Description
Compute the replacement total fertility rate as the reciprocal of the product of the female birth share and female survival to the reproductive ages, then classify an observed TFR against it within a stated tolerance.
Compute the replacement total fertility rate as the reciprocal of the product of the female birth share and female survival to the reproductive ages, then classify an observed TFR against it within a stated tolerance.1
When to use Replacement Fertility With Mortality Checker
Use this fertility measure when the births, women at risk, parity categories, and observation period follow the definition required by the selected method.
- Survival
- Probability a female newborn survives to the mean age of childbearing.
- Female share
- Female share of births, conventionally 100/205 for a sex ratio at birth of 105.
- Observed TFR
- Observed TFR to compare against replacement.
- Tolerance
- Absolute band treated as being at replacement.
How the method works
- Replacement TFR
- Replacement-level total fertility rate under current mortality.
- Status
- Comparison of the observed TFR with replacement.
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
Similar or alternative tools
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