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.
|Date of creation:||2010|
|Contact details of provider:|| Postal: Private Bag X1, 7602 Matieland|
Fax: +27 (0)21-808 2409
Web page: https://www.ekon.sun.ac.za
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- 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.
- 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.
- 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).
- 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).
- 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.
- Ravallion, Martin & Bidani, Benu, 1993. "How robust is a poverty profile?," Policy Research Working Paper Series 1223, The World Bank.
- 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, M., 1992. "Poverty Comparisons - A Guide to Concepts and Methods," Papers 88, World Bank - Living Standards Measurement.
- repec:dau:papers:123456789/4381 is not listed on IDEAS Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:sza:wpaper:wpapers123. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Melt van Schoor)
If references are entirely missing, you can add them using this form.