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Reconstructing Two Decades of Inequality in the Sahel Region

Author

Listed:
  • Betti, Gianni
  • Crescenzi, Federico
  • Dang, Hai-Anh
  • Molini, Vasco
  • Mori, Lorenzo

Abstract

Measuring inequality in West Africa is a challenging task that is constrained by the limited availability and irregular collection of household consumption data. To address this challenge, we reconstructed the evolution of inequality in the Sahel region using an innovative framework that combines Survey-to-Survey Imputation Techniques (SSITs) with Generalized Additive Models for Location, Scale and Shape (GAMLSS), based on labour force surveys conducted in eight countries between 2003 and 2021. The findings highlight pronounced regional disparities, persistent levels of inequality, and a clear association between inequality patterns and episodes of conflict or political instability. Our contribution is twofold: methodologically, we introduce a flexible SSIT-GAMLSS model that incorporates two levels of random effects; substantively, we provide new evidence of inequality trends in francophone West Africa, a region largely underrepresented in empirical research.

Suggested Citation

  • Betti, Gianni & Crescenzi, Federico & Dang, Hai-Anh & Molini, Vasco & Mori, Lorenzo, 2025. "Reconstructing Two Decades of Inequality in the Sahel Region," GLO Discussion Paper Series 1695, Global Labor Organization (GLO).
    • Handle: RePEc:zbw:glodps:1695
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    JEL classification:

    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General
    • I32 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - Measurement and Analysis of Poverty
    • O15 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Economic Development: Human Resources; Human Development; Income Distribution; Migration

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