This dataset contains variables concerning measures of ethnic, linguistic and religious fractionalization.

The variables reflect the probability that two randomly selected people from a given country will not share a certain characteristic. The higher the number the less probability of the two sharing that characteristic. The data was last updated by the authors in 2002. For the QoG Data, the data from the year 2000 is repeated throughout the other years, then, these variables should be taken as historical variables.