When the remedy is worse than the disease: Adjusting survey income data for price differentials, with special reference to Mozambique
In using survey data for money metric analysis of poverty and well-being, it is customary to adjust either the data or the poverty line for spatial prices differentials where data exist to make such adjustment. In developing countries where recorded price differentials between regions or provinces are large, using the remedy of adjusting for price differentials may sometimes lead to very wrong conclusions about the spatial distribution of poverty. This may have severe consequences for policy and may be detrimental to the poor. The paper deals with a specific situation, that of Mozambique, where large price differentials are said to exist between the capital (Maputo City) on the one hand, and the rest of the country. Official data that adjust for this may heavily over-estimate poverty in Maputo City, with consequences for the targeting of poverty. We use an asset index based on Multiple Correspondence Analysis (MCA) to show that the spatial poverty profile derived from the price-adjusted income data exaggerates poverty in Maputo City, and undertake further empirical analysis to show that not adjusting for the estimated spatial price differentials may have given more reliable estimates of well-being, judging by asset holdings.
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- John Gibson & Scott Rozelle, 2005. "Prices and Unit Values in Poverty Measurement and Tax Reform Analysis," World Bank Economic Review, World Bank Group, vol. 19(1), pages 69-97.
- Ravallion, Martin & Bidani, Benu, 1994.
"How Robust Is a Poverty Profile?,"
World Bank Economic Review,
World Bank Group, vol. 8(1), pages 75-102, January.
- Christophe Muller, 2005.
"The Measurement Of Poverty With Geographical And Intertemporal Price Dispersion. Evidence From Rwanda,"
Working Papers. Serie AD
2005-11, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
- Christophe Muller, 2008. "The Measurement Of Poverty With Geographical And Intertemporal Price Dispersion: Evidence From Rwanda," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 54(1), pages 27-49, 03.
- Muller, Christophe, 2008. "The Measurement of Poverty with Geographical and Intertemporal Price Dispersion. Evidence from Rwanda," Economics Papers from University Paris Dauphine 123456789/4381, Paris Dauphine University.
- Christophe Muller, 2005. "The measurement of poverty with geographical and intertemporal price dispersion, Evidence from Rwanda," Working Papers DT/2005/16, DIAL (Développement, Institutions et Mondialisation).
- Ravallion, M., 1992. "Poverty Comparisons - A Guide to Concepts and Methods," Papers 88, World Bank - Living Standards Measurement.
- Booysen, Frikkie & van der Berg, Servaas & Burger, Ronelle & Maltitz, Michael von & Rand, Gideon du, 2008. "Using an Asset Index to Assess Trends in Poverty in Seven Sub-Saharan African Countries," World Development, Elsevier, vol. 36(6), pages 1113-1130, June.
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