Advances and Applications in Statistics
Volume 43, Issue 1, Pages 53 - 63
(November 2014)
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AN RSPCA-TYPE WEALTH INDEX FOR TELEPHONE SURVEYS
Alyaa R. Zahran
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Abstract: One of the important national indices that are calculated from household surveys is the Asset Wealth Index of Filmer and Pritchett [4, 5]. Assets that are thought to reflect household wealth are used to proxy the wealth level. In phone polls, however, this index loses its attractiveness because of its dependence on a huge set of assets. In this paper, the Robust Sparse Principle Component Analysis (RSPCA) technique is used to create a Wealth index that depends on a smaller set of assets. Using the 2008 Egypt-EDHS data (EDHS08), the RSPCA wealth scores are created and compared to the Egyptian EDHS wealth scores. Using the relative distribution approach, the RSPCA Wealth scores distribution is mildly diverged from the EDHS wealth scores distribution, where the location-shift effect is larger than the shape change effect. In addition, it has been shown that the relative distribution density of the RSPCA scores to the EDHS scores exhibits less polarization. |
Keywords and phrases: relative distribution, robust sparse PCA, assets index, socio-economic status, telephone surveys. |
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