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2011-2015: an illustration based on the decomposition of the Gini coefficient using the Shapley value approach

Yawo Noglo () and Komivi Afawubo ()

Economics Bulletin, 2017, vol. 37, issue 4, 2602-2615

Abstract: This paper aims at measuring and analyzing for the first time the evolution of inequality in the distribution of expenditures among households in Togo over 2011-2015 and according to the characteristics of household heads. The study is based on the two most recent surveys (QUIBB 2011 and QUIBB 2015) and the monetary well-being indicator used is total expenditure per adult equivalent. With regard to the decomposition of the Gini index through Shapley's approach, within-groups inequality is greater than between-groups inequality for both years with an increase of total within-areas and within-age inequalities. The decomposition of overall within-groups component shows that urban areas, male-headed families and the 31-50 age group are more contributory. The increase of this contribution is observed for urban areas, the 31-50 age group while we have a slight decrease concerning gender. These findings witness that in Togo, policy actions to reduce inequalities should first target the within-groups expenditure disparities by focusing on the most contributory groups, and also without neglecting the between-strata effects.

Keywords: Decomposition; Gini coefficient; inequality; Shapley's value; Togo (search for similar items in EconPapers)
JEL-codes: D6 I3 (search for similar items in EconPapers)
Date: 2017-11-19
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