OECD Regions at a Glance 2007
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Regional disparities in specialisation
Regional specialisation varies considerably among OECD countries. Specialisation is commonly measured by the Balassa-Hoover index: the ratio between an industry’s weight in a region and its weight in the country overall. A region is specialised in an industry when the index is above 1 and it is not specialised when the index is below 1. A region’s degree of specialisation, therefore, can be measured as the weighted average of its degrees of specialisation in each industry. The higher this value, the more specialised the region.
Also available in: French
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