Codes and Frequencies
Most IPUMS data transformations are performed using variable harmonization tables that specify how each value in the source data is recoded. Some variables also require programming logic in addition to the harmonization table. The harmonization documents for this variable are:
MIG1_P_ML indicates the person's region of previous residence within Mali. The person may have moved at any time in their life.
Click on the Source Variables tab for information on place of residence for each sample year. Source variables may contain more geographic unit detail but are not suitable for cross-temporal comparison.
Comparability — General
Where boundaries changed over time, units were harmonized to create units with boundaries that remain stable over time.
- The region of Kidal was created from Gao in 1991.
- Mali 1998: Non-visitors
- Mali 2009: Persons whose previous residence was in Mali
- Mali: 1998, 2009