| http://www.w3.org/ns/prov#value | - The first one considers the number of telephone lines in the selected household; the other is related to the number of adults in the household; and the last is a post-stratification factor calculated based on data from Census 2000, considering 36 sociodemographic strata resulting from the combination of two categories of gender, six categories of age (18-24, 25-34, 35-44, 45-54, 55-64 and 65 years
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