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:
GEO2_ NG2010 identifies the household's Local Government Areas (LGA) within Nigeria in 2010. LGAs are the second level administrative units of the country, after states. A GIS map (in shapefile format), corresponding to GEO2_ NG2010 can be downloaded from the GIS Boundary files page in the IPUMS International web site.
The full set of geography variables for Nigeria can be found in the IPUMS International Geography variables list. For cross-national geographic analysis on the first and second major administrative level of any country refer to GEOLEV1, and GEOLEV2. More information on IPUMS-International geography can be found here.
Comparability — General
Note that the Nigeria sample of 2010 is a household survey. The sample followed a two-stage design in which enumeration areas (EA) served as the primary sampling units and households as the secondary sampling units. EAs are very low level geographic units in Nigeria. A total of 500 EAs were selected based on probability proportional to size of the total EAs in each state and the total households listed in those EAs. In each EA, 10 households were selected randomly from a list of all households in the EA. In total, 4,851 households and 29,993 individuals were interviewed in 500 EAs.
Local Government Areas with populations less than 20,000 (based on the most recent sample year) were regionalized (combined) with neighboring LGAs within the same states to create units with populations greater than 20,000.
- All households
- Nigeria: 2010