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Which wealth index to use for state specific studies [message #25995] Tue, 24 January 2023 00:55 Go to next message
sujata is currently offline  sujata
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Registered: May 2019
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I am working on a state-specific analysis but not sure which wealth index to use. There is hv270 (wealth index combined) and sv270s (wealth index within state). there are other wealth indices as well for urban and rural areas. In what context these different wealth indices would be used and how much the results would differ?
Re: Which wealth index to use for state specific studies [message #26026 is a reply to message #25995] Mon, 30 January 2023 09:05 Go to previous message
Janet-DHS is currently offline  Janet-DHS
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Registered: April 2022
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Following is a response from DHS staff member, Tom Pullum:

The usual wealth index (hv270, v190, and mv190) gives quintiles at the national level. The urban and rural versions give quintiles within the urban and rural subpopulations, respectively. The state version give quintiles within the states.

The difference between the different versions is just in where the four cut points (to give five quintiles) are placed on the continuous scale (hv271 / v191 / mv191). The components and the weights (or loadings) for the different components are the same. DHS does not construct the continuous scale (the first principal component of a principal components analysis) separately within all these sub-populations.

I recommend the national version for a national-level analysis or if you want to compare states. However, if you are doing a within-state analysis, focusing on some outcome within a specific state, use the state version. I think you just need to ask whether, for example, it is more useful to know whether a household is in the top or bottom wealth quintile (a) nationally, or (b) in the urban or rural subpopulation, or (c) within the state.
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