title: Mid-point for open-ended income category and the effect of equivalence scales on the income-health relationship.
abstract: To estimate the mid-point of an open-ended income category and to assess the impact of two equivalence scales on income-health associations. Data were obtained from the 2010 Brazilian Oral Health Survey (Pesquisa Nacional de Saúde Bucal--SBBrasil 2010). Income was converted from categorical to two continuous variables (per capita and equivalized) for each mid-point. The median mid-point was R$ 14,523.50 and the mean, R$ 24,507.10. When per capita income was applied, 53% of the population were below the poverty line, compared with 15% with equivalized income. The magnitude of income-health associations was similar for continuous income, but categorized equivalized income tended to decrease the strength of association.
authors.forename: Roger Keller
authors.initials: RK
authors.lastname: Celeste
authors.forename: João Luiz
authors.initials: JL
authors.lastname: Bastos
mesh_terms: D000293:Adolescent; D001938:Brazil; D003753:Dental Health Surveys / Q000706:statistics & numerical data*; D006801:Humans; D007182:Income / Q000706:statistics & numerical data*; D009909:Oral Health / Q000706:statistics & numerical data; D011203:Poverty / Q000706:statistics & numerical data