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:
GEO1_PT identifies the household's sub-region within Portugal in all sample years. Sub-regions are the first level administrative units of the country. Sub-regions follow the geographic divisions of the Nomenclature of Territorial Units for Statistics (NUTS). They are statistical rather than administrative units, composed of municipalities in Portugal. GEO1_PT is spatially harmonized accounting for political boundary changes across census years. Some detail is lost in harmonization. A GIS map (in shapefile format), corresponding to GEO1_PT can be downloaded from the GIS Boundary files page in the IPUMS International web site.
The full set of geography variables for Portugal 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.
- All households
- Portugal: 1981, 1991, 2001, 2011