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Technical Note
WIID Companion (May 2021): data selection
This document is part of a series of technical notes describing the compilation of a new companion database that complements the World Income Inequality Database (WIID). This technical note describes the first stage in constructing the new version (31 May 2021) of the companion datasets, i.e. the data selection process.
It provides an overview of the approach followed by the selection of the series from different sources with information on income distribution and inequality that best represent each country and period. It also discusses the general criteria used and their implementation, which are illustrated with a few country examples.