Residual Vital Statistics Net Migration
Estimate net migration by the vital-statistics residual method as P2 - P1 - B + D over the intercensal period.
Description
Estimate net migration by the vital-statistics residual method as P2 - P1 - B + D over the intercensal period.
Estimate net migration by the vital-statistics residual method as P2 - P1 - B + D over the intercensal period.1
When to use Residual Vital Statistics Net Migration
Use this migration measure when origins, destinations, reference periods, and the distinction between moves, movers, stocks, and flows are explicit.
- P1
- Population at the start of the period.
- P2
- Population at the end of the period.
- Births
- Births registered during the period.
- Deaths
- Deaths registered during the period.
How the method works
- NM
- Estimated net migration; negative values signal net emigration.
Limitations and assumptions
Migration estimates are sensitive to boundary changes, return moves, duration thresholds, missing origin-destination cells, and whether the source records residence, birthplace, or events.
Alternative or Complementary measures
Compare flow-based estimates with residence or birthplace stocks and, where possible, an independent residual method. Gross inflows and outflows reveal movement that a net balance alone conceals.
References
-
Human migration — Wikipedia contributors
Similar or alternative tools
- Census Survival Migration Estimate
Estimate intercensal net migration for an age cohort as the observed cohort at the second census minus the survivors implied by applying a national life-table census survival ratio to the first-census cohort.
- Migration Effectiveness Index EM Calculator
Compute the migration effectiveness index as the sum of absolute regional net inflows divided by total migration turnover of an origin-destination matrix.
- Return Migration Proportion Lookup
Compute the proportion of in-migration to a place that consists of former residents moving back, as return migrants per hundred total in-migrants.