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OECD countries: Large regions ; Small regions (Predominantly urban, rural and intermediate regions) ; Non-OECD member countries: Large regions
The OECD has classified two levels of geographic units within each member country: large regions (Territorial level 2 or TL2) composed by 362 regions, and small regions (Territorial Level 3 or TL3) composed by 1802 small regions. TL3 regions are further classified as predominantly urban (PU), predominantly rural (PR) and intermediate (IN). All the territorial units are defined within national borders, and each TL3 region is contained in one TL2 region, with the exception of the United States and one region in Germany (Ost-Friesland DE12). National values have been computed based on regional estimates. For this reason, it is possible that in some cases these values differ from national statistics.
Key Statistical Concept
In any analytical study conducted at sub-national levels, the choice of the territorial unit is of prime importance. The territorial grids (TL2 and TL3) used in this database are officially established and relatively stable in all member countries, and are used by many as a framework for implementing regional policies. This classification - which, for European countries, is largely consistent with the Eurostat classification - facilitates greater comparability of regions at the same territorial level. The differences with the Eurostat NUTS classification concern Belgium, Greece and the Netherlands where the NUTS 2 level correspond to the OECD TL3 and Germany where the NUTS1 corresponds to the OECD TL2 and the OECD TL3 corresponds to 97 spatial planning regions (Groups of Kreise). For the United Kingdom the Eurostat NUTS1 corresponds to the OECD TL2.
Due to limited data availability, labour market indicators in Canada are presented for a different grid (groups of TL3 regions). Since these breakdowns are not part of the OECD official territorial grids, for the sake of simplicity they are labelled as Non Official Grids (NOG).
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