Brazil within Brazil : testing the poverty map methodology in Minas Gerais
AbstractThe small-area estimation technique developed for producing poverty maps has been applied in a large number of developing countries. Opportunities to formally test the validity of this approach remain rare due to lack of appropriately detailed data. This paper compares a set of predicted welfare estimates based on this methodology against their true values, in a setting where these true values are known. A recent study draws on Monte Carlo evidence to warn that the small-area estimation methodology could significantly over-state the precision of local-level estimates of poverty, if underlying assumptions of spatial homogeneity do not hold. Despite these concerns, the findings in this paper for the state of Minas Gerais, Brazil, indicate that the small-area estimation approach is able to produce estimates of welfare that line up quite closely to their true values. Although the setting considered here would seem, a priori, unlikely to meet the homogeneity conditions that have been argued to be essential for the method, confidence intervals for the poverty estimates also appear to be appropriate. However, this latter conclusion holds only after carefully controlling for community-level factors that are correlated with household level welfare.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 4513.
Date of creation: 01 Feb 2008
Date of revision:
Statistical&Mathematical Sciences; Population Policies; Science Education; Scientific Research&Science Parks; Small Area Estimation Poverty Mapping;
This paper has been announced in the following NEP Reports:
- NEP-ALL-2008-02-16 (All new papers)
- NEP-DEV-2008-02-16 (Development)
- NEP-ECM-2008-02-16 (Econometrics)
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- Tarozzi, Alessandro, 2011. "Can census data alone signal heterogeneity in the estimation of poverty maps?," Journal of Development Economics, Elsevier, vol. 95(2), pages 170-185, July.
- Francesca Ballini & Gianni Betti & Samuel Carrette & Laura Neri, 2009. "Poverty and inequality mapping in the Commonwealth of Dominica," Estudios Económicos, El Colegio de México, Centro de Estudios Económicos, vol. 0(Special i), pages 123-162.
- Douidich, Mohammed & Ezzrari, Abdeljouad & Lanjouw, Peter, 2008. "Simulating the impact of geographic targeting on poverty alleviation in Morocco : what are the gains from disaggregation ?," Policy Research Working Paper Series 4724, The World Bank.
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