### Combined Migration Rates 1992-2018

* The age-standardised in-migration ratio is a weighted average of the age-specific in-migration ratio, where migration is defined as a person changing their place of usual residence to a household located in one of the SAPRIN surveillance populations, and the weights are the proportions of persons in the corresponding age groups of the standard population

* The age-standardised out-migration rate is a weighted average of the age-specific out-migration rates, where migration is defined as a person changing their place of usual residence from a household located in one of the SAPRIN surveillance populations to one located outside, and the weights are the proportions of persons in the corresponding age groups of the standard population

### Agincourt Migration Rates 1992-2018

* The age-standardised in-migration ratio is a weighted average of the age-specific in-migration ratio, where migration is defined as a person changing their place of usual residence to a household located in one of the SAPRIN surveillance populations, and the weights are the proportions of persons in the corresponding age groups of the standard population

* The age-standardised out-migration rate is a weighted average of the age-specific out-migration rates, where migration is defined as a person changing their place of usual residence from a household located in one of the SAPRIN surveillance populations to one located outside, and the weights are the proportions of persons in the corresponding age groups of the standard population

### DIMAMO Migration Rates 1998-2018

* The age-standardised in-migration ratio is a weighted average of the age-specific in-migration ratio, where migration is defined as a person changing their place of usual residence to a household located in one of the SAPRIN surveillance populations, and the weights are the proportions of persons in the corresponding age groups of the standard population

* The age-standardised out-migration rate is a weighted average of the age-specific out-migration rates, where migration is defined as a person changing their place of usual residence from a household located in one of the SAPRIN surveillance populations to one located outside, and the weights are the proportions of persons in the corresponding age groups of the standard population

### AHRI Migration Rates 2000-2018

* The age-standardised in-migration ratio is a weighted average of the age-specific in-migration ratio, where migration is defined as a person changing their place of usual residence to a household located in one of the SAPRIN surveillance populations, and the weights are the proportions of persons in the corresponding age groups of the standard population

* The age-standardised out-migration rate is a weighted average of the age-specific out-migration rates, where migration is defined as a person changing their place of usual residence from a household located in one of the SAPRIN surveillance populations to one located outside, and the weights are the proportions of persons in the corresponding age groups of the standard population