WEALTHS (V191) refers to the household's wealth index value generated by the product of standardized scores (z-scores) and factor coefficient scores (factor loadings) of wealth indicators. Most researchers will want to use instead the complementary variable WEALTHQ (V190), which reports quintile ranking (from poorest to richest) of the woman's household, in terms of wealth score, for a given sample.
For further information about the calculation and meaning of the wealth index, see the description of WEALTHQ, the summary information about the wealth index on the DHS Program website here [URL omitted from DDI.] and/or the DHS Comparative Report on "The DHS Wealth Index" here [URL omitted from DDI.].
The variables used to calculate wealth index scores are sample-specific. See Comparability.