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Original Articles

The easiest way to estimate the Oaxaca–Blinder decomposition

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Pages 96-101 | Published online: 18 May 2012
 

Abstract

This article studies the relation between the Oaxaca–Blinder decomposition and the estimated coefficient of a dummy variable for a linear regression. We calculate the unexplained part of the decomposition from the estimated coefficient of the dummy variable. More precisely, if the exogenous variables are uncorrelated to the dummy variable, the estimated coefficient and its variance give directly the value and the variance of the unexplained part of the decomposition. If the independent variables are correlated a simple relation is obtained. Moreover, we show that the significance of the unexplained part can be deduced from the significance of the estimated coefficient of the dummy variable.

JEL Classification:

Acknowledgements

We thank P. Rogeon for his mathematical comments. We received financial support from the Mission Recherche (MiRe).

Notes

1 Oaxaca (Citation1973) and Blinder (Citation1973) defined two other decompositions, one supposes that the norm in terms of remuneration corresponds to group h’s remuneration and another supposes that the norm in terms of remuneration corresponds to group f’s remuneration .

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