Table 8 Migration measures used for validation. In this table, yij is a general term for a bilateral migration flow from either an estimation method or the equivalent reported data. All numbers except the Proportion are in units of individuals per five years.
From: Bilateral international migration flow estimates for 200 countries
Measure | Measure Calculation (Single Period) | Reported Flow Observations (All Periods) | Reported Flow Data Source |
|---|---|---|---|
Count | y ij | 32,698 | International migration flows to and from selected countries: The 2015 revision. United Nations Population Division |
Natural Logarithm of Count | logyij | 32,698 | International migration flows to and from selected countries: The 2015 revision. United Nations Population Division |
Proportion | \(\frac{{y}_{ij}}{{\sum }_{j}{y}_{ij}}\,{\rm{o}}{\rm{r}}\,\frac{{y}_{ij}}{{\sum }_{i}{y}_{ij}}\) | 32,698 | International migration flows to and from selected countries: The 2015 revision. United Nations Population Division |
Emigration Rate | \(\frac{{{\rm{\Sigma }}}_{i}{y}_{ij}}{{p}_{i}}\) |          155 | International migration flows to and from selected countries: The 2015 revision. United Nations Population Division |
Immigration Rate | \(\frac{{{\rm{\Sigma }}}_{i}{y}_{ij}}{{p}_{j}}\) |          172 | International migration flows to and from selected countries: The 2015 revision. United Nations Population Division |
Net Migration Count | \(\sum _{i}\,{y}_{ij}\,-\,\sum _{j}{y}_{ij}\) |      1000 | World Population Prospects: The 2017 Revision. United Nations Population Division |
