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_IT identifies the household's region (regione) within Italy in all survey years. Regions are the first level administrative units of the country. A GIS map (in shapefile format), corresponding to GEO1_IT can be downloaded from the GIS Boundary files page in the IPUMS International web site.
The full set of geography variables for Italy can be found in the IPUMS International Geography variables list. For cross-national geographic analysis on the first and second major administrative level refer to GEOLEV1, and GEOLEV2. More information on IPUMS-International geography can be found here.
Comparability — General
Where boundaries changed over time, units were harmonized to create units with boundaries that remain stable over time.
Boundary changes and other issues:
- Valle D'Aosta is enumerated separately in Labor Force Surveys after 2014 and is combined with Piemonte in GEO1_IT for consistency purposes.
- The boundary between Emilia-Romagna and Marche changed in 2011 and has been harmonized
- All households
- Italy: 2001, 2011, 2011Q1, 2012Q1, 2013Q1, 2014Q1, 2015Q1, 2016Q1, 2017Q1, 2018Q1, 2019Q1