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Participants were categorized based on household drinking water and residential soil arsenic concentrations.
We also examined whether differences in water use practices existed among pregnant women based on household drinking water source of private vs. public supply.
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An index of household wealth, based on household assets such as source of drinking water, ownership of a toilet and type of toilet was created using principal component analysis (PCA) methods [ 44] and used to group households into wealth quintiles.
The wealth index is based on household ownership of consumer goods (such as radio, television); dwelling characteristics; type of drinking water source; toilet facilities and other characteristics related to the household's socio-economic status.
Household wealth with three categories as poor, middle and rich was created using principal component analysis (PCA) [ 45] based on household asset ownership of a toilet, type of the toilet and source of drinking water.
An asset index was created using principal components analysis [ 44] based on household ownership of a set of assets (radio, television, cell phone, bed, mattress, bednet, and bicycle), lighting source, drinking water supply, sanitation facilities, and flooring materials.
Bursaries Up to £1,000 a year, based on household income.
But tuition can be sharply discounted, based on household income, and scholarships are available.
For example, brands can target advertising based on household income.
Those who qualify based on household income and assets, receive free care.
Poverty indicators were based on household income.
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