A Note on the Contribution of Natural Population Growth and Migration to the Aggregate Poverty Change

This note extends the Ravallion and Huppi (1991) aggregate poverty change decomposition. It splits up the contribution of population share variation to overall poverty change into two distinct components: the effect of population shift between sectors is indeed isolated from the difference of natural sectoral population growth effect. Such decomposition is important for countries where the contribution of the inter-sectoral effect to total poverty change is high